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.
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.
This is a two-product bundle that can be used to either clear green water and sludge or to keep pond water clear. The two different strains of unique bacteria will focus on different problem areas in the pond, such as dirty water and the build-up of sludge.
Clear green or murky water, break down sludge, and prevent algal blooms in large ponds with this bundle of products.
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.
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 treat 30,000L
Check the pH of the pond water before using, and if required, use Pond Equaliser
Refer to the individual products for different application methods
Reapply every 7-14 days
Clears green or murky water
Breaks down and eliminates pond sludge
Completely safe for fish and other wildlife
Natural product that contains no harmful chemicals
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.
Envii Pond Klear Xtra treats green or dirty water and Envii Sludge Klear reduces pond sludge.
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.
Key Ingredients
Bacteria
Our range of Bacillus bacteria are versatile and capable of performing a variety of essential tasks, just as they do in nature. Whether it's breaking down waste or fixing nitrogen in the soil, these bacteria thrive in both aerobic and anaerobic conditions, even at low temperatures, to deliver the results you need.
Red Algae
Red algae, or Lithothamnium Calcareum, is a seaweed found in the Atlantic Ocean and English Channel. Known for its natural ability to absorb and filter excess heavy metals like lead and copper, it offers a natural solution for cleaner, safer water.
So far this product did not clear the algae in my pond and the water is still murky.
"The product looks great. Good marketing but regret that the first treatment did not make any improvements to the water clarity or algae. If anything it is worse now than before. I will repeat the dose again at the weekend"
— Howard (3/5)
First time buyer
"Excellent product which was a super easy online purchase. Fast delivery and very well packed. Will certainly be a repeat customer."
— David S. (5/5)
Hopeful
"Have only used one treatment so far but all looks good. Doing another this Friday. Really good product"
— Su (4/5)
This is the second time
"This is the second time we have used green clear extra but still with no improvement after 2and a weeks of application The water is still very green"
— David m. (5/5)
I've only used it a
"I've only used it a couple of times but the water is still green. I will use the whole bottle & then see. At the moment I can see no difference in the water colour."
— Nigel J. (5/5)
Great products. Our pond started
"Great products. Our pond started spring with blanket weed smothering everything. Envii products sorted it out in a couple of days. Impressive!"
— miss C. (5/5)
Excellent product - does the
"Excellent product - does the job"
— Barbara D. (5/5)
Does the job!
"Used regularly, these products keep the water clear and healthy looking."
— Julie G. (5/5)
Excellent product does what it’s
"Excellent product does what it’s intended to do"
— Colin W. (5/5)
See Winter Pond Treatment -
"See Winter Pond Treatment - please combine the reviews"
— Pauline H. (5/5)
Q&A
Featured Products
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.