Pond Shop

BACTA CLEAR

The best bacteria to start up the pond, clean up bottom silt, boost your plants and prevent algae growth.

BACTA CLEAR

- For 1,000 to 20,000 L
- 100% eco: clear water fast
- Safe for humans, plants & animals

 29,95

In stock

BACTA CLEAR - 3 pieces

- 1 bottle for 1,000 to 20,000 L
- 100% eco: clear water fast
- Safe for humans, plants & animals

Original price was: 90.00.Current price is: 79.95.

In stock

BACTA CLEAR - 12 pieces

- pond bacteria for 1,000 to 20,000 L
- 100% eco: clear water fast
- Safe for humans, plants & animals

Original price was: 360.00.Current price is: 299.95.

In stock

Pond Care Package - M - 1,000 - 10,000 L

- For 1,000 - 10,000 L
- pond supplies
- Placement: -1 to -100 cm

Original price was: 75.00.Current price is: 69.95.

In stock

Pond Care Package - L - 1,000 - 20,000 L

- For 1,000 - 20,000 L
- pond supplies
- Placement: -1 to -100 cm

Original price was: 110.00.Current price is: 94.95.

In stock

BACTA CLEAR - 6 pieces

- 1 bottle for 1,000 to 20,000 L
- 100% eco: clear water fast
- Safe for humans, plants & animals

Original price was: 180.00.Current price is: 159.95.

In stock

Anti Algae Pond Package - M - 1,000 to 10,000 L

- For 1,000 to 10,000 L
- Algae control pond
- 100% eco: Safe for humans, plants & animals

Original price was: 55.00.Current price is: 49.95.

In stock

Pond Care Package - XL - 20,000 - 40,000 L

- For 20,000 - 40,000 L
- pond supplies
- Placement: -1 to -100 cm

Original price was: 220.00.Current price is: 209.95.

In stock

This is what our customers say!

Excellent customer review vdvelde.com 200+ reviews at

Frequently Asked Questions

Pond Advice

BACTA CLEAR has an unopened shelf life of approximately 1 year. After opening it has a shelf life of only 2 days. Therefore, we recommend adding the entire bottle to the pond at once. BACTA CLEAR is based on a 100% natural formula and cannot be overdosed.

BACTA CLEAR is completely natural and cannot be overdosed. So you can feel free to pour the entire bottle into your pond regardless of the number of gallons of water.

One bottle of BACTA CLEAR contains 1 liter and is suitable for ponds from 1,000 to 20,000 liters. Do you have a smaller pond of 10 to 1,000 liters? Then BACTA TAB is the ideal alternative to BACTA CLEAR. Designed specifically for smaller ponds, this product offers the same effective formula as BACTA CLEAR, but in tablet form. Find out more about BACTA TAB and choose the best solution for your pond!

To keep your pond healthy, it is important to add BACTA CLEAR to the water twice a year. These bacteria help break down waste products in the pond and ensure clean, clear water.

We recommend adding BACTA CLEAR in the spring, as soon as the water temperature rises above 12°C. This is when the bacteria are most active and help the pond get back on its feet after winter.

In the fall, before it freezes, it is also wise to add BACTA CLEAR. Once the water freezes, many of the bacteria go into a resting phase. Adding them earlier allows them to do their work before the temperature drops.

These two treatments a year will keep your pond clear and balanced, provided your pond is otherwise properly set up.

Want to check this? Then do our online pond check easily and quickly to ensure a year-round healthy and clear pond: Do the pond check.

To keep your pond healthy, it is important to add BACTA CLEAR to the water twice a year. These bacteria help break down waste products in the pond and ensure clean, clear water.

We recommend adding BACTA CLEAR in the spring, as soon as the water temperature rises above 12°C. This is when the bacteria are most active and help the pond get back on its feet after winter.

In the fall, before it freezes, it is also wise to add BACTA CLEAR. Once the water freezes, many of the bacteria go into a resting phase. Adding them earlier allows them to do their work before the temperature drops.

These two treatments a year will keep your pond clear and balanced, provided your pond is otherwise properly set up.

Want to check this? Then do our online pond check easily and quickly to ensure a year-round healthy and clear pond: Do the pond check.

Our pond bacteria are a valuable tool for balancing your pond. These bacteria need at least 10 days to settle in properly and do their job. During this time they begin their important job of promoting healthy water quality and reducing algae.

However, it is important to realize that bacteria alone are not enough to solve all the problems in your pond year-round. If the pond is not set up properly, algae may still occur. A layer of 5 to 10 inches of porous pond substrate on the pond floor is essential. In addition, sufficient aquatic plants should be present, such as marsh plants, oxygen plants and water lilies. These allow the bacteria to do their job optimally and help to remedy and prevent the green color of the water and algae.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other and only by using them together can you achieve the desired result. How exactly to do this, you can read step by step in our online pond check: Do the pond check.

BACTA CLEAR is 100% safe for humans, plants and animals. This is because the product is made through a 100% natural formula with no chemicals added.

BACTA CLEAR is created from single-celled microorganisms that act as a natural filtration system in water. They convert pollutants, such as ammonium and nitrite, into substances that are harmless to nature.

Yes indeed, you can swim in your pond immediately after addition. In fact, BACTA CLEAR is 100% safe for humans, plants and animals because the product is made via a 100% natural formula with no chemicals added.

BACTA CLEAR is created from single-celled microorganisms that act as a natural filtration system in water. They convert pollutants, such as ammonium and nitrite, into substances that are harmless to nature.

If you have a UV lamp in your pond, we recommend turning it off after you add pond bacteria because the UV lamp can kill bacteria. As long as you are using BACTA CLEAR, you can leave the UV lamp turned off. In fact, a properly set-up pond will ensure that your pond remains naturally clear and healthy year-round.

To keep your pond naturally balanced, it is important to have a layer of substrate on the bottom and to have enough oxygen plants, marsh plants and water lilies in the water. In addition, add bacteria twice a year. This way your pond will stay in top condition without the need for the UV lamp anymore.

Want to know step by step how to set up your pond so that a UV lamp is no longer necessary? Do our pond check.

A green pond after adding BACTA CLEAR is not unusual. This is because the bacteria are doing their job, they loosen bottom dirt causing waste products to float to the water surface, BACTA CLEAR solves this problem within +/- 10 days.

However, it is important to realize that while bacteria are a useful tool, bacteria alone are not enough to solve all the problems in your pond. In fact, if the pond is not set up properly, algae can easily return.

A layer of 5 to 10 cm of porous pond substrate on the pond floor is essential. In addition, sufficient aquatic plants must be present, such as marsh plants, oxygen plants and water lilies. These ensure that the bacteria can do their work optimally and that pond problems will stay away year-round.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other and only by using them together can you achieve the desired results. How exactly to do this, you can read step by step on our pond check page: Do the pond check.

BACTA CLEAR can be combined with other products without problems, the best combinations for optimal results are POND SUBSTRATE pond substrate and INSTA CLEAN soil cleaner.

The pond substrate provides an ideal environment for BACTA CLEAR's bacteria to settle and work effectively. The porous structure of the pond substrate allows the bacteria to spread easily and quickly begin breaking down organic matter and waste products.

INSTA CLEAN acts as a powerful bottom cleaner that removes silt and dirt particles from the pond. This allows BACTA CLEAR's bacteria to focus fully on purifying the water without being hindered by excess debris on the bottom.

The combination of these products ensures a healthy and stable pond environment in which algae problems and cloudy water are minimized.

In addition, make sure that the pond contains sufficient and different types of aquatic plants so that everything can work together for the desired result: A year-round clean pond.

Checking to see if your pond is set up correctly? Do the pond check.

A green pond after adding BACTA CLEAR is not unusual. This is because the bacteria are doing their job, they loosen bottom dirt causing waste products to float to the water surface, BACTA CLEAR solves this problem within +/- 10 days.

However, it is important to realize that while bacteria are a useful tool, bacteria alone are not enough to solve all the problems in your pond. In fact, if the pond is not set up properly, algae can easily return.

A layer of 5 to 10 cm of porous pond substrate on the pond floor is essential. In addition, sufficient aquatic plants must be present, such as marsh plants, oxygen plants and water lilies. These ensure that the bacteria can do their work optimally and that pond problems will stay away year-round.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other and only by using them together can you achieve the desired results. How exactly to do this, you can read step by step on our pond check page: Do the pond check.

Yes, you can feel free to run the pump or filter while using BACTA CLEAR.

However, it is important to realize that a pump and filter are unnecessary if the pond is set up correctly. The pond will then have everything it needs to keep itself in biological balance. Bacteria alone are not enough to solve all problems. Without a properly set up pond, algae can return after a while.

A layer of 5 to 10 cm of porous substrate on the pond bottom is essential. In addition, sufficient aquatic plants must be present, such as marsh plants, oxygen plants and water lilies. These elements allow the bacteria to do their work optimally, which contributes to clear water and the prevention of algae.

A good balance between these aspects is crucial for a healthy pond. Each element reinforces the other and only by using them together will you achieve the desired results. Discover how to do this? Do our pond check.

It is normal for BACTA CLEAR to have an odor. This is due to the natural bacteria and microorganisms present in the product. How strong this odor is varies from bottle to bottle. The smell disappears quickly after adding it to the pond and does not negatively affect water quality or the health of plants and animals. It is a sign that the product is active and effective.

Our pond bacteria are a valuable tool for balancing your pond. These bacteria need at least 10 days to settle in properly and do their job. During this time they begin their important job of promoting healthy water quality and reducing algae.

A green or cloudy pond after adding BACTA CLEAR is not unusual. This is because these are the bacteria doing their work, this color disappears by itself.

However, it is important to realize that bacteria alone are not enough to solve all the problems in your pond. If the pond is not set up properly, algae may still occur.

A layer of 5 to 10 cm of porous substrate on the pond bottom is essential. In addition, sufficient aquatic plants must be present, such as marsh plants, oxygen plants and water lilies. These ensure that the bacteria can do their work optimally and that pond problems are prevented for good.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other and only by using them together can you achieve the desired results.

Discover how to do this? Check out our online pond check.

The cloudy/dark color may occur because silt is released from the pond bottom, which is then broken down by the bacteria of BACTA CLEAR. When insufficient aquatic plants are present to absorb the released waste, the water may become temporarily cloudy. This is a normal process and usually disappears within +/- 10 days.

To prevent this cloudy color from returning, it is important to set up the pond correctly. A layer of 5 to 10 cm of porous substrate on the pond bottom is essential. In addition, sufficient aquatic plants should be present, such as marsh plants, oxygen plants and water lilies. These ensure that the bacteria can do their work optimally and help to prevent the cloudy/dark color in the future.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other, and only by using them together can you achieve the desired results. Discover how to do this? Do our pond check.

BACTA CLEAR has a shelf life of about 1 year in a sealed bottle; the bacteria only come to life when they come in contact with water.

After opening the bottle, however, the product only has a shelf life of a few days, this is why we recommend using the entire contents of the bottle at once. Because the pond bacteria are completely natural, it is not possible to over-dose them, making it safe to empty the entire bottle into the pond.

Bevat jouw vijver minder dan < 1.000 liter water? Kies dan voor BACTA TAB. Dit is het broertje van BACTA CLEAR en heeft dezelfde werking. De enige verschillen tussen deze twee zijn dat BACTA TAB voor kleine vijvers ontwikkeld is en dat het in tabletvorm komt.

A green oil film on the water after adding BACTA CLEAR is not unusual. This is because the bacteria are doing their job: they loosen bottom dirt, causing wastes to float to the surface of the water. BACTA CLEAR solves this problem within about 10 days.

However, it is important to note that bacteria are a useful tool, but not the only solution to all pond problems. In fact, if the pond is not set up properly, algae can easily return.

A layer of 5 to 10 cm of porous pond substrate on the pond bottom is essential. In addition, it is important to have sufficient aquatic plants such as marsh plants, oxygen plants and water lilies. These plants support the work of the bacteria and keep pond problems away throughout the year.

A good balance between these elements is crucial for a healthy pond. Each aspect reinforces the other, and only by using them together can you achieve the desired results. Discover how to do this? Do our pond check.

BACTA CLEAR remains useful at temperatures below 10 degrees, although its effectiveness decreases slightly as some of the bacteria go into hibernation. A small portion remains active and can already work to maintain the balance of the pond. By adding BACTA CLEAR now, you give the bacteria a chance to become well established so they can get right to work in the spring.

Unfortunately, we do not offer a discount on a single bottle of BACTA CLEAR.

Still want to save money? Then choose a discount pack of 3 bottles of BACTA CLEAR. A bottle has a shelf life of about 1 year, so you can use the first bottle right away, six months later the second bottle, and another six months after that the last bottle.

That way you use all the bottles within a year and save €10.

Order the advantage pack of BACTA CLEAR here. Do you have a very large pond? We also offer BACTA CLEAR in packs of six or twelve.

Lactic acid bacteria are often used because of their specific action in controlling bacterial and parasitic fungal diseases, but they also have obvious limitations. They primarily target a narrow range of application and require regular repeated administration to maintain effect. In addition, precise dosing is required, making their use complicated and less practical for pond owners.

Natural bacteria, such as those found in BACTA CLEAR, offer a more versatile and user-friendly alternative. These bacteria not only support fish health, but also actively work against algae growth and efficiently break down organic waste. This creates a healthier pond environment without the complexity of constant additions and precise dosing.

With natural bacteria, you are investing in a self-maintaining biological balance in the pond, which ultimately means less work and expense. For a sustainable, low-maintenance solution that keeps your pond clear and healthy, natural bacteria are the best choice.

Bacterial contains nitrifying bacterial cultures in freeze-dried form, which help quickly establish a biological balance in new ponds. While this is an effective product, it comes with some limitations. Bacterial's action is temporary, requires repeated use and focuses primarily on increasing nitrifying bacteria, making it less suitable for general pond maintenance. In addition, it requires precise dosages and schedules, making its use less practical.

Why choose BACTA CLEAR?
Natural bacteria, such as those found in BACTA CLEAR, offer a more complete pond maintenance solution:

  • Broad scope of action: BACTA CLEAR not only fights algae and breaks down organic waste, but also supports a lasting biological balance in the pond.
  • Easy to use: No complicated dosing schedules or frequent additions required.
  • Durable and cost-saving: The versatile operation means you need fewer additional products, saving cost and effort.

With BACTA CLEAR, you choose a long-term healthy, clear pond without the limitations of freeze-dried bacteria. It is an environmentally friendly and effective solution for total pond management.

Without a doubt, the best anti-algae product for the pond is BACTA CLEAR. This natural remedy fights algae at the source by reducing nutrients that algae need to grow. The powerful bacteria in BACTA CLEAR break down organic waste, restore biological balance and improve water quality. The result? A crystal clear pond without murky water or green deposits. Plus, BACTA CLEAR is safe for fish, plants and the environment, making it a sustainable and effective choice for any pond enthusiast.

Bokashi pond balls work by adding beneficial microorganisms that break down organic waste and restore biological balance to the pond. These balls are placed in the pond, where they slowly dissolve and release their beneficial bacteria to reduce soil silt and improve water quality.

BACTA CLEAR offers the same benefits as Bokashi pond balls, but goes one step further. By adding beneficial bacteria directly to the water, BACTA CLEAR speeds up the process of breaking down organic waste and preventing siltation. This leads to an even more effective and efficient solution for maintaining a healthy pond environment without the need for regular additions as with Bokashi pond balls.

Optimize CO2 levels in your pond for healthy plant growth with BACTA CLEAR

While CO2 is crucial for oxygen plant growth in ponds, BACTA CLEAR offers an advanced solution that goes beyond traditional CO2 additives. This product not only improves CO2 levels but also provides a comprehensive improvement in water quality, keeping your plants healthy and preventing algae blooms.

Prevent algae blooms and improve habitat in new ponds with BACTA CLEAR

New ponds often lack essential microorganisms, which can lead to a lack of CO2 and thus problems with plant growth and algae. BACTA CLEAR offers a robust solution that not only stabilizes CO2 but also helps build healthy microbial flora, essential for a balanced pond.

Increase the efficiency of CO2 and water quality in your pond with BACTA CLEAR

BACTA CLEAR goes beyond simply increasing the KH value. It strengthens the entire biological balance of the pond, supports plant CO2 uptake and promotes clear and healthy pond water. By using BACTA CLEAR, you provide a more stable and healthy pond environment in which both plants and fish can thrive.

Why do fish gasp for air?

Oxygen deficiency is the most common cause of fish gasping for air. This can be caused by:

High water temperatures, which reduces oxygen uptake.
Not enough oxygen-producing aquatic plants.
Organic debris, such as leaves and fish food, which consumes oxygen in decomposition.

Fish death pond cause

The most common causes of fish mortality are:

  • Oxygen deficiency due to insufficient aeration or excess waste.
  • Poor water quality due to ammonia or nitrite.
  • Sudden temperature changes.

Preventive tips to avoid fish kills

A healthy pond starts with proper setup and regular maintenance. Here are some tips to prevent fish deaths:

  • Check your pond: Make sure your pond is set up correctly through our pond check. This helps balance the ecosystem and identify problems early.
  • Use BACTA CLEAR twice a year: By adding this product, you improve water quality and provide a stable ecosystem that breaks down ammonia and nitrite.
  • Keep the bottom clean with INSTA CLEAN: Fish produce a lot of waste, which pollutes the pond faster. INSTA CLEAN removes organic bottom debris and prevents oxygen depletion.
  • Maintain your pond regularly: Remove leaves, algae and other debris, and ensure good water circulation to maintain a healthy ecosystem.

With these preventive measures you keep your pond and fish healthy. At vdvelde.com you will find the products and expertise to achieve this easily and sustainably!

Preventing fish gasping for air

1. Do the pond check

Check that your pond is set up correctly. Is there a layer of porous pond substrate on the bottom to allow aquatic plants and beneficial bacteria to settle? Does your pond contain enough and different types of aquatic plants? Do you add BACTA CLEAR to the water 2x a year? These are things that ensure that your pond has all the means to keep itself naturally balanced. A properly set up pond provides year-round clear water, little to no maintenance and healthy fish.

2. INSTA CLEAN for oxygenated soil

INSTA CLEAN breaks down organic waste in the bottom, reducing oxygen deficiency. This product works quickly and promotes a healthy habitat for your fish.

3. BACTA CLEAR for biological balance.

BACTA CLEAR strengthens the ecosystem by breaking down waste products and excess nutrients. This prevents the accumulation of pollutants that consume oxygen.

The Best Filter Bacteria for your Pond

BACTA CLEAR offers a unique and powerful pond maintenance solution, making it the best choice for filter bacteria. Below we name all the benefits of BACTA CLEAR and why it excels in maintaining a healthy and clear pond.

Benefits of BACTA CLEAR

  • Maintain clear water: BACTA CLEAR ensures that your pond water remains crystal clear by efficiently breaking down organic waste and improving water quality.
  • Preventing algae growth: The bacteria in BACTA CLEAR actively help prevent algae growth, resulting in a cleaner and healthier pond.
  • Setting up a successful pond: BACTA CLEAR provides the necessary steps and support to successfully set up and maintain your pond, which is essential for long-term pond water health and clarity.
  • Excellent combination with pond substrate: The bacteria in BACTA CLEAR adhere excellently to pond substrate, increasing the effectiveness of the substrate and contributing to a better filtration process.
  • Stimulate oxygen plants: BACTA CLEAR converts oxygen into carbon dioxide (CO2), allowing oxygen plants to grow better and contribute to a balanced pond environment.
  • Environmentally friendly: The microorganisms in BACTA CLEAR are environmentally friendly and biodegradable, providing a sustainable and ecologically sound pond maintenance solution.
  • Better water quality: pond bacteria of BACTA CLEAR contributes significantly to better water quality, which is essential for the health of your fish and plants.

BACTA CLEAR is the optimal choice for pond owners looking for a comprehensive, environmentally friendly and effective pond maintenance solution. With benefits such as maintaining clear water, preventing algae growth, stimulating oxygen plants and improving water quality, BACTA CLEAR provides everything you need to keep your pond healthy and beautiful. Choose BACTA CLEAR and enjoy a year-round clear and healthy pond.

You just added this product to the cart: