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Envii Winter Pond Bundle

Prepare your pond for winter and prevent green water and algae in spring. This bundle of natural, bacterial products help to clean ponds over winter by reducing sludge and improving water clarity and quality.

The bundle includes the Envii Winter Pond Treatment and Envii Sludge Klear.



Here at Envii, we know that winter is a crucial time for ponds and contributes to their appearance in the new year. If left, sludge quickly builds up and can lead to green water and algae as soon as spring has sprung. Fortunately, our Winter Pond Bundle makes preparing a pond for winter a little easier.

Containing two of our unique bacterial products, (Envii Winter Pond Treatment and Envii Sludge Klear) the two products work together to reduce nutrient levels and sludge during winter.

By treating and preparing a pond for winter, you reduce both the nutrient levels and sludge levels, which act as food sources for algae to thrive on in the spring when the water temperature increases. As well as using bacterial treatments in your pond, there are some other things you can do to prepare your pond for winter.

What make the Envii Winter Pond Bundle special?

  • They work down to and below 4°C making them the only products capable of working at such low temperatures.
  • Prevents green water and algae from growing throughout winter and into spring.
  • Breaks down organic waste to prevent sludge from building up.
  • Completely safe to use will all species of fish, wildlife, pets and plants.
  • Contain only natural ingredients.
  • Contains 9 Envii Winter Pond Treatment tablet and 6 Envii Sludge Klear tablets capable of treating up to 45,000 litres.
  • Envii Sludge Klear is supplied in a compostable packet that breaks down within 8 weeks. Helping you to go green with Envii.
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If you have a pump, keep it on throughout winter to keep the bacteria moving in the pond and to prevent anaerobic sludge. If possible, lift the pump up slightly in the water so that the fish can sit below it in the warmer water.

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Can they be used without a pump & filter?
Yes, both Envii Winter Pond Treatment and Envii Sludge Klear will clear your pond and break up sludge without the use of a pump or filter. However, a pump and filter will help to speed up the clearing process.
Will the products clear green water?
Yes they will either clear existing green water, or help to prevent green water.
How often should I use the products?
Through winter we recommend using the product every 3-4 weeks to replenish any bacteria that will have naturally dies off.


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