great product to use in
"great product to use in the winter to help maintain a healthy pond"
£16.95
Unit price perEach Tablet Treats 5,000 Litres
Winter Pond Treatment is a unique solution designed to keep your pond clean and healthy during the colder months. Often overlooked in winter, ponds accumulate organic waste that can lead to algae blooms, blanket weed, and green water as the warmer weather returns. This specialized treatment uses beneficial bacteria that work efficiently even in temperatures as low as 4°C, breaking down organic waste and preventing it from causing problems come spring.
Thanks to the high concentration of beneficial bacteria, Winter Pond Treatment is specifically formulated to work longer in colder conditions, ensuring your pond remains clean throughout winter. For best results, it’s recommended for use between November and February, with regular treatments of Pond Klear or Pond Klear Xtra throughout spring, summer, and autumn to maintain a healthy pond year-round.
If you have any questions or need any advice, call us on 01246 240880, email us info@envii.co.uk, or chat live with one of our team.
Envii Winter Pond Treatment breaks up debris in the pond to prevent green water in spring.
The product contains a lot more of our unique bacteria, allowing it to work at lower temperatures.
Yes, this is safe for all fish, pets and wildlife.
The UV light does not need to be turned off when using this.

Overall rating: 4.518072 / 5 from 83 reviews.
Review topics: ["results","quality","delivery","works","water","service","pond","treatment","tablets"].
"great product to use in the winter to help maintain a healthy pond"
"Great product, I have been using it for about 13 years and it keeps my wildlife pond clean and fresh. I use tablets every week during winter and then Sludge Klear during the warmer months. When emptied a couple of years ago the pond floor had no sludge, just a thin layer a mud. Thanks for a great product and so easy to use."
"The pond pills have partly cleared the pond after trying many other products. But it is only partly clear. Pity. The other makes did nothing."
"as with the other products from envii i have purchased they have for me worked as intended, and greatful that they do/have, next is to order pond balance treatment thank you."
"Pond was starting to clear and the treatment has urged it along. Shall continue a few more weeks at least. Like the ethos of the firm and helpfulness. Thanks!"
"Quick service. Good product."
"Excellent product does everything it’s supposed to do"
"This treatment worked very well and the water is very clear."
"Have not used it yet"
"Good discount and quick despatch. Used Envii products before and always been satisfied. hoping this winter pond treatment will be s good."
Keep your pond crystal clear, healthy, and thriving with our premium pond treatments. Designed for garden pond owners, fish keepers, and wildlife enthusiasts, our range tackles everything from water clarity to nutrient balance, ensuring a safe environment for fish and plants.
Whether you need to remove green water, combat stubborn blanket weed, or improve pond health with effective sludge removal, our solutions are fast-acting, and easy to apply. Trusted by UK gardeners for all-season pond care, these treatments help prevent common problems and keep your pond looking its best year-round.