Stabilize water values
Stabilize water values
Testing pond water is an intensive activity that often yields little. After all, water values change by the minute; even a small rain shower confuses your water values. At vdvelde.com we are happy to help you with a sustainable solution to stabilize water values and maintain a healthy, clear pond.
Anti Pond Water Testing: Water Stabilizer Package - S - 100 to 1,000 L
- For 100 to 1,000 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
Anti Pond Water Testing: Water Stabilizer Package - M - 1,000 to 10,000 L
- 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
Anti Pond Water Testing: Water Stabilizer Package - L - 10,000 to 20,000 L
- For 10,000 to 20,000 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
Anti Pond Water Testing: Water Stabilizer Package - XL - 20,000 to 40,000 L
- For 20,000 to 40,000 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
Customers give us a 9.2/10
Stabilize water parameters with natural pond plants
Simon van der Velde
Clear and Keep Pond Package
Stabilizes water values 100% naturally so you never have to test your pond water again. Year-round clear pond water with hardy oxygen plants.
Pond Clear Make and Keep Package - S - 100 - 400 L
- For 100 - 400 L
- Oxygen plants + pond bacteria
- Placement: loose in the water
Pond Making and Keeping Clear Package - M - 500 - 1,250 L
- For 500 - 1.250 L
- Oxygen plants + bacteria
- Placement: loose in the water
Pond Clear Make and Keep Package - L - 1,500 - 3,000 L
- For 1.500 - 3.000 L
- Oxygen plants + bacteria
- Placement: loose in the water
Pond Clear and Keeping Package - XL - 3,500 - 6,000 L
- For 3,500 - 6,000 L
- Oxygen plants + bacteria
- Placement: loose in the water
Pond Making and Keeping Clear Package - XXL - 6,500 - 9,000 L
- For 6,500 - 9,000 L
- Prevents and combats floating algae
- Placement: loose in the water
Pond Clear Make and Keep Package - XXXL - 10,000 - 15,000 L
- For 10,000 - 15,000 L
- Oxygen plants + bacteria
- Placement: loose in the water
Not sure how many gallons of water your pond holds?
Customers give us a 9.2/10
This is what our customers say!
Excellent 
200+ reviews at 
Marjoke Bakker
Oxygenating plants and a bottle of Bacta clear
Purchased: Pond clear package - M
My pond was quite murky, so after a good conversation with Simon, I decided to follow the advice: more oxygen plants and a bottle of bacteria. I ordered the recommended package, but after four days no improvement was visible. Full of disappointment, I contacted customer service. They advised me to be patient and give the process 2-3 weeks. Although I had my doubts about it, I decided to wait anyway. And what turned out? After two weeks, the water started to clear and I even saw frogs that I had never noticed before! Thanks team vdvelde, and apologies for my impatience!
Patrick Müller
Plants are growing much better now and water is crystal clear
Purchased: POND SUBSTRATE pond substrate - 40 liters
Last year I had a landscaper install a plant filter at my swimming pond, recommending lava and some plants from the local garden center. Unfortunately, things went completely wrong; the plants died one by one and I suffered an algae infestation. After contacting customer service, I was advised to replace the lava with pond substrate and order some more plants. Now, several months later, the plants are growing well, and my filter is finally free of algae.
Fenna Schmidt
My little city pond
Purchased: Complete Pond Package - S - Red
I had been dreaming of having a pond in my urban garden for some time, but it always seemed like such a hassle. Online I found a complete package and decided to take the gamble, although I was skeptical about the quality of plants sent through the mail. But to my surprise, everything was delivered neatly and well-packaged. Within no time I had my pond set up. To my delight, after only two months I saw the first water lily bloom, and as icing on the cake I discovered salamanders in my pond. No idea how they got there, but it only adds to the joy. Truly enjoying it!
Susi Werner
A must for anyone with a pond (large or small)
Purchased: Simons Pond Advice Book
This book completely meets my expectations. A great guide with lots of great tips on pond construction, pond plants and design.
Highly recommended purchase on my part.
Great book!
Jules Chabot
Blue lily: beautiful!
Purchased: Hardy Blue Water Lily - Nymphaea Blue Queen
Thank you very much for the generous delivery of the swamp iris "Blue Lis".
The new plants have been planted and I am curious to see if they will bloom this year.
There is good news about the water lily "Blue Queen": It is also blooming here in blue - and how beautiful!
Bart Timmermans
Removing soil sludge without a vacuum cleaner
Purchased: Soil Dirt Pond Removal Package - M
After years of accumulation by fish, quite a bit of silt had accumulated in my pond.
At first I thought about a pond vacuum cleaner, but after contacting customer service I opted for the bottom debris removal package. I was skeptical, especially because the water became murky the first week. But after a month, the silt has reduced considerably. No hassle with a vacuum cleaner, and great results!
I am a fan.
Johanna Brink
water lilies for more biodiversity
As lovers of greenery, we were looking for a sustainable addition to our project. Van der Velde's water lilies were a hit! With DROP & GROW, it was really simple: plant and enjoy. We asked for different varieties and this was no problem either. Delivery was perfect. Within a week we already saw leaves above water, and meanwhile there are several flowers blooming. Both we and our customer are very enthusiastic.
Raphael Blanchard
Oxygen plants save my fish
Purchased: Oxygen Plants Pond Package - L
My fish were gasping for air, so I was looking for an air pump. Then I read that oxygen plants could also solve this problem. I ordered the package that fit my pond, and now my fish are swimming around carefree again. Additional plus: my pond water is much clearer. Fish happy, me happy!
Greta Schultze
Very happy with my small pond
Purchased: Complete Pond Package - XS
This handy kit helped me set up my mini pond quickly. Everything you need is included! The service and advice were top notch, much better than at the garden center where no one really knows anything.
Maria Maes
From maintenance to an organic swimming pond
Purchased: Complete Plant Filter Package - L
I was tired of constantly cleaning the pump, so I decided to convert my pond to an organic swimming pond. With the plant filter package from vdvelde.com, it worked out perfectly! Now I enjoy a beautiful, natural filter and lovely swimming water.
Everything for a natural pond
Choose your pond and discover everything you need for a maintenance-free, self-regulating pond.
What are good water values for a pond?
For a healthy pond with sufficient oxygen plants and a natural balance, water values do not need to be constantly measured. In a well-established pond, plants and bacteria regulate the balance on their own. Ideally, the pH should be between 6.5 and 8, the KH between 6 and 8, and the GH around 8 to 12. With enough oxygen plants and products such as BACTA CLEAR and INSTA CLEAN, you can ensure clear water without constant monitoring. See our step-by-step pond check for more information on natural balance.
Which is more important, GH or KH?
Both values play a role, but in a naturally designed pond with sufficient oxygen plants, you don't need to measure them constantly. The KH (carbonate hardness) affects pH stability, while the GH (total hardness) adds minerals essential for plant and fish health. Using enough oxygen plants and proper setup with natural products such as INSTA CLEAN and BACTA CLEAR will keep your pond naturally stable.
How can I increase the GH level in my pond?
In a well-designed pond with the right oxygen plants, it is usually not necessary to adjust GH levels regularly. Should this still be necessary, you can increase GH by adding minerals such as calcium sulfate or magnesium sulfate. However, by choosing a natural setup with oxygen plants, these values often stabilize on their own.
What should I do if the KH is too high?
A high KH value rarely occurs in a naturally balanced pond. However, when the KH is too high, it can be easily resolved by changing some water. In a pond with sufficient oxygen plants and good natural setup, it is usually not necessary to continuously correct the KH, as the plants and bacteria support stable water quality.
Is a pH of 8 good for my pond?
Yes, a pH of 8 is generally good for ponds with proper setup and oxygen plants. A pH between 6.5 and 8 is ideal, and a value around 8 is fine if the rest of the water quality is balanced. Oxygen plants help keep the pH stable, so adjustment is usually not necessary.
What pH level is right for my pond?
A pH between 6.5 and 8 is optimal for most ponds. By setting up your pond naturally and adding plenty of oxygen plants, the pH usually remains stable on its own. Oxygen plants and products such as BACTA CLEAR help maintain healthy pH levels and a clear pond without the need for constant testing.