Used both these products and
"Used both these products and over a few weeks my pond water is nice and clear again, definitely will use these products again"
£22.95
Unit price perClear green or murky water, break down sludge, and prevent algal blooms with this bundle of products.
1 x Pond Klear and 1 x Sludge Klear
Pond Klear contains millions of beneficial bacteria that target the microscopic algae and nutrients in the pond. They clump them together and sink them to the bottom of the pond, where they can be removed via the pump and filter or digested by the bacteria.
Pond Klear treats up to 40,000L
Sludge Klear is a pond sludge remover that contains millions of beneficial bacteria. Their job is to target pond sludge, break it up, and get it to the water column. From there, your filters can catch it, and it can be physically washed away. Sludge Klear will work in ponds that don’t have filters but can take longer to work as we’re relying on bacteria alone. The bacteria are capable of working at 4°C to remove sludge and improve water clarity.
6 Sludge Klear tablets treats 30,000L
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.
Yes, both products are natural products that are safe for all fish, plants and wildlife.
Yes, the different strains of bacteria work well together to clear pond water and remove sludge.
Yes but it will take slightly longer to clear the pond.
Whilst this can be used all year round, it is most effective when water temperatures are above 4°C.
The UV light does not need to be turned off when using this.


Overall rating: 4.60835 / 5 from 503 reviews.
Review topics: ["results","delivery","works","service","pond","filter","treatment","fish"].
"Used both these products and over a few weeks my pond water is nice and clear again, definitely will use these products again"
"I started to notice a difference two or three weeks after starting to use this product. Now I have a beautifully clear pond."
"Worked a treat on my small pond. Excellent product."
"Good product, cleared up a small ornamental pond without disturbing the fish."
"great product to help breakdown the sludge in a pond"
"Our pond was full of mud you couldn't see the fish it had taken 3 weeks to clear with cleaning out the filter and turning the pump off as clear as a bell now good product works well when you follow the instructions"
"Difficult to review products as I think it will be a while before I see the benefits of them. My star rating is for the help I have been given on the phone which has been excellent and the advisers have been friendly. In addition the products have arrived quickly."
"Did the job (keep the filters clean ) having to do mine daily at first"
"I have had to use 2 applications of pond klear extra (2 x bottles) to my 4000 ltr pond and it now beginning to have an effect. I also purchased 1 x bottle of pond klear that I shall start using in the months to come. Appears to be working so a good product and delivered on time."
"Cracking stuff . Really cleared up the pond. Didn’t upset the plants or the fish 🐟 like the fact that you can just squeeze the bottle to measure the liquid out before putting it in the pond ."
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.