pond supplies

POND BLOCK

Control filamentous algae effectively and effortlessly with Pond Block! This product gradually dissolves in your pond and remains active for months, regardless of rain or evaporation. Ideal for year-round use, even in winter.

POND BLOCK

- Usage: 1 block per 1,000 L
- In 10 days algae free
- Advice: combine with Bacta Clear

 9,95

In stock

BACTA CLEAR + 2x POND BLOCK

- For 2,000 L
- Algae free in 10 days
- Thread algae and floating algae control

Original price was: 50.00.Current price is: 44.95.

In stock

BACTA TAB + POND BLOCK

- For 10 to 1,000 L
- Algae free in 10 days
- Thread algae and floating algae control

 24,95

In stock

Thread algae control - Pond Block + 5 moss balls

- Usage: 1 block per 1,000 L
- In 10 days thread algae free
- Incl. oxygen plants

Original price was: 30.00.Current price is: 19.95.

In stock

BACTA CLEAR + 10x POND BLOCK

- For 10,000 L
- Wire algae free in 10 days
- Thread algae and floating algae control

Original price was: 130.00.Current price is: 99.95.

In stock

BACTA CLEAR + 5x POND BLOCK

- For 5,000 L
- Wire algae free in 10 days
- Thread algae and floating algae control

Original price was: 80.00.Current price is: 64.95.

In stock

Thread Algae Fighting Pond Package - Small

- For 1,000 liters of water
- In 10 days filamentous algae free
- Placement: loose in the water

Original price was: 45.00.Current price is: 29.95.

In stock

This is what our customers say!

Excellent customer review vdvelde.com 200+ reviews at

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Tips, advice and substantial savings
I would like to share my experience with you, and advise you to solve any pond problems and reduce pond maintenance. As a result, you can easily save hundreds of dollars.
Tips, advice and substantial savings
I would like to share my experience with you, and advise you to solve any pond problems and reduce pond maintenance. As a result, you can easily save hundreds of dollars.
Tips, advice and substantial savings
I would like to share my experience with you, and advise you to solve any pond problems and reduce pond maintenance. As a result, you can easily save hundreds of dollars.
Tips, advice and substantial savings
I would like to share my experience with you, and advise you to solve any pond problems and reduce pond maintenance. As a result, you can easily save hundreds of dollars.
Oxygen plants are a must for any pond!
Sufficiently oxygenating underwater plants in the pond means you will NOT need a pump and filter. Oxygenating plants filter the water and block the sun. This causes the water to heat up less which reduces the formation of algae. Oxygen plants also provide shelter for fish from impending danger. All of our oxygen plants are hardy and are supplied from our own aquatic plant nursery with a 100% growth and flowering guarantee. For oxygen plants, I recommend a minimum of 10 to 12 individual plants per m³ (1000 liters of water) and 2 baskets of 4 plants per m². The amount needed depends on how quickly you want the pond to balance and your visual requirements.
Pond specialist & aquatic plant breeder
Simon van der Velde
Loose oxygen plants
Ideal for the deeper part of the pond.
Recommendation: 10-12 plants per 1,000 liters of water
Baskets of oxygen plants
Suitable for shallow areas, provide natural elevation differences and help prevent algae.
Recommendation: 2 baskets per 1 m²
Oxygen plants are a must for any pond!
Sufficiently oxygenating underwater plants in the pond means you will NOT need a pump and filter. Oxygenating plants filter the water and block the sun. This causes the water to heat up less which reduces the formation of algae. Oxygen plants also provide shelter for fish from impending danger. All of our oxygen plants are hardy and are supplied from our own aquatic plant nursery with a 100% growth and flowering guarantee. For oxygen plants, I recommend a minimum of 10 to 12 individual plants per m³ (1000 liters of water) and 2 baskets of 4 plants per m². The amount needed depends on how quickly you want the pond to balance and your visual requirements.
Pond specialist & aquatic plant breeder
Simon van der Velde
Loose oxygen plants
Ideal for the deeper part of the pond.
Recommendation: 10-12 plants per 1,000 liters of water
Baskets of oxygen plants
Suitable for shallow areas, provide natural elevation differences and help prevent algae.
Recommendation: 2 baskets per 1 m²