Water Quality

Pond water testing

Looking for a pond water test? Go for a water test kit or our sustainable alternative for a clear and healthy pond without pond water testing.

Pond Water Test Strips 6 in 1 Water Test

- Tests 6 different values
- Very easy to use
- Fast results

 14,95

In stock

Anti Pond Water Testing: Water Stabilizer Package - M - 1,000 to 10,000 L

- For 1,000 to 10,000 L
- Removes waste products and stabilizes KH, GH and PH
- 100% eco: quickly clear water, safe for people, plants and animals

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

In stock

Simon van der Velde

Important to know:

  • The right bacteria and our bottom cleaner will automatically ensure stable water values.
  • This gives you clear water, a healthy pond and prevents algae problems.
  • Let nature work for you: easier and more efficient!

Simon van der VeldePond specialist and aquatic plant breeder

Water Stabilizer Package: The better alternative to pond water testing

Testing pond water and correcting it with various agents is time consuming and unnecessary. With the right bacteria and a good soil cleaner, you create stable water values and a healthy pond with clear water, free of algae.

Best pond test set

If you do want to use a pond test set, we've tested the best option for you. That way we keep it organized and you don't have to choose from an overwhelmingly large assortment of pond water test kits.

Anti Pond Water Testing: Water Stabilizer Package - M - 1,000 to 10,000 L

- For 1,000 to 10,000 L
- Removes waste products and stabilizes KH, GH and PH
- 100% eco: quickly clear water, safe for people, plants and animals

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

In stock

Pond Water Test Strips 6 in 1 Water Test

- Tests 6 different values
- Very easy to use
- Fast results

 14,95

In stock

Pond water testing

Testing pond water? Don't do it!

Often specialists recommend testing your water values to prevent fluctuating water values with remedies to stabilize KH, PH and GH.

What do water tests do?

Water tests, as the name suggests, test the water values of pond water. As many people know, water values fluctuate continuously, for example due to rain, cold and heat. This makes water values testing an intensive task.

We have the solution!

Stabilize water values with BACTA CLEAR and INSTA CLEAN. This duo offers a simple and natural solution to make water testing a thing of the past. BACTA CLEAR and INSTA CLEAN make cloudy water and floating algae a thing of the past and tackle string algae quickly and effectively. They allow aquatic plants to grow lush and strong again, and keep GH, KH and PH levels perfectly balanced. In addition, soil silt is efficiently broken down and removed. This keeps your pond clear and healthy without having to constantly test the water quality.

Float algae in your pondClear pond

Discover the Power of BACTA CLEAR and INSTA CLEAN

After years of testing, we proudly present our innovative solution:

BACTA CLEAR and INSTA CLEAN.

This duo offers a simple and natural solution to all your pond problems. No more complicated water testing or chemicals needed.

Pond Water Testing Alternative: Water Stabilizer Package - Without Water Test

The benefits of BACTA CLEAR & INSTA CLEAN:

  • Cloudy water and floating algae: Are a thing of the past.
  • Thread algae: Are dealt with quickly and effectively.
  • aquatic plants: Grow lush and strong again.
  • GH, KH and PH values: Remain perfectly balanced.
  • Soil sludge: Is efficiently decomposed and removed.

Make your pond clear and healthy again with BACTA CLEAR and INSTA CLEAN. Enjoy a beautiful, trouble-free pond.


Developed by Simon van der Velde

With 35 years of experience in pond maintenance, Simon van der Velde knows exactly what is needed for a healthy pond.

His expertise led to the development of BACTA CLEAR & INSTA CLEAN, a unique blend of bacterial strains that keep your pond clear and healthy.

At products are 100% natural and not harmful to humans, plants or animals.



Advantages of BACTA CLEAR

BACTA CLEAR is the ideal solution to naturally balance and maintain the water parameters in your pond. This product contains special bacteria that actively manage algae growth and efficiently break down organic waste, keeping your pond water clear and healthy.

Advantages of BACTA CLEAR:

  • Maintain clear water: BACTA CLEAR helps prevent algae growth and ensures permanently clear pond water.
  • Effective bacteria: The bacteria adhere excellently to pond substrate, which increases their effectiveness.
  • Enhanced growth of oxygen plants: These bacteria convert oxygen into carbon dioxide (CO2), which promotes oxygen plant growth.
  • Environmentally friendly: The microorganisms in BACTA CLEAR are environmentally friendly and contribute to improved water quality.
  • No water testing required: As a water stabilizer, BACTA CLEAR keeps water values constant, eliminating the need for regular water testing.

Benefits of INSTA CLEAN

INSTA CLEAN breaks down organic matter and increases CO2 concentration in the water, cleaning the pond floor and promoting the growth of aquatic plants .

Benefits of INSTA CLEAN:

  • Decomposition of organic matter: INSTA CLEAN ensures that soil debris is cleaned up.
  • Increased oxygen levels: Increased CO2 concentration increases oxygen levels in the water, which is beneficial for pond inhabitants.
  • Healthy aquatic plants: This product promotes the growth of strong and healthy aquatic plants.
  • No water testing required: INSTA CLEAN acts as a water stabilizer, keeping water values stable and eliminating the need for frequent water testing.

The Power of Combination

Together, BACTA CLEAR and INSTA CLEAN ensure a balanced pond with strong aquatic plants. The combined action of BACTA CLEAR and INSTA CLEAN keeps your pond in optimal condition without the need for constant water testing. These products act as water stabilizers, so together they provide a stable and healthy pond environment, so you can enjoy your pond more without worrying about water quality.

This is what our customers say!

Excellent customer review vdvelde.com 200+ reviews at

BACTA CLEAR & INSTA CLEAN

For a pond from 1,000 to 20,000 gallons of water

BACTA CLEAR + INSTA CLEAN - 5 liters

- For 1,000 to 10,000 L
- Prevents and combats floating and filamentous algae
- Removes silt and stabilizes KH, GH and PH
- 100% eco: quickly clear water, safe for people, plants and animals

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

In stock

BACTA CLEAR + INSTA CLEAN - 10 liters

- For 10,000 to 20,000 L
- Removes silt, prevents duckweed and stabilizes KH, GH and PH
- 100% eco: quickly clear water, safe for people, plants and animals

Original price was: 80.00.Current price is: 69.95.

In stock

Testing pond water? Don't do it!

Save hundreds of dollars by not testing water but instead using my step-by-step plan and tips.

The hidden pitfalls of commercial pond water testing

Often I see people walk into garden center outlets or specialty stores with a jar of pond water to have their water tested. The employee does a test and, surprisingly, there almost always turn out to be abnormalities in the water values.

On advice, people then purchase various remedies over the course of a month to bring and maintain the water to the "right" value. For a small pond, this can quickly cost between 200 and 300 Euros. Box office!

But here we are focusing on symptom relief rather than actually solving the underlying problems. It is reminiscent of political decisions: spending a lot of money without addressing the root of the problem.

More important is to scrutinize the problem itself.

The key to a healthy pond: observation and logic

Personally, I don't test the water, but I observe. My 5 checkpoints are of greater value than a commercial pond test from garden centers or specialty stores. Following my advice can quickly save you hundreds of dollars!

Is the pond constructed correctly?
Is the water temperature controlled? At the edges, in the marsh area with often only 10 inches of water, the water can get warm in the summer, which can lead to growth of filamentous algae.
Are the fish behaving and feeding normally? Is the number of fish in the pond not too many?
Are the plants growing well and is the plant selection appropriate?
Is the equipment, such as pumps, filters, UV lamps and hydrogen extractors, properly installed? Are they doing more harm than good?

It is crucial to understand that in nature, water values fluctuate due to weather conditions and seasonal changes. The goal should be to create an "all-season" pond, much like all-season car tires or a four-season quilt.

Actually, everything makes perfect sense, but we often forget to think logically.

Common pond problems are:

Excessive algae growth
Poorly growing plants

The solution lies in my roadmap. With this you can check if your pond is properly constructed. If it is not, isolated remedies will not help.

You also get access to my pond tips, including special offers. I guide you through all seasons, from starting up in early spring to winterizing in fall. Plus, you can always ask questions through our support team.

Buying pond test strips? Choose BACTA CLEAR as a better alternative

Instead of buying pond test strips, opt for BACTA CLEAR. This product automatically balances your pond water without you having to constantly check pH or ammonia levels. With BACTA CLEAR you improve the water quality of your pond naturally, reducing stress for both fish and plants.

Order pond test strips online or stabilize directly with INSTA CLEAN?

While ordering pond test strips online may seem convenient, INSTA CLEAN offers a better solution. This product works quickly to make your pond water clear and healthy, without spending time on complicated measurements. A single dose of INSTA CLEAN is often enough to remove algae, dirt and excess nutrients in the water, so your pond brightens right up.

BACTA CLEAR and INSTA CLEAN as substitutes for water test strips

BACTA CLEAR and INSTA CLEAN are excellent alternatives to traditional water test strips. Where test strips take time and effort to use over and over again, these products help keep water quality continuously stable. BACTA CLEAR works on a biological basis and strengthens your pond's natural ecosystem, while INSTA CLEAN quickly dissolves dirt and excess nutrients for clear results.

Why choose BACTA CLEAR and INSTA CLEAN?

With BACTA CLEAR and INSTA CLEAN, you no longer have to worry about complicated testing procedures. These products work preventively to keep your pond water clean and balanced, ensuring a healthy habitat for fish and plants. This saves you time and eliminates the need to constantly check water values with test strips.

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