Annual Pond Treatment

Name: Annual Pond Treatment
Brand: envii
SKU: PKSKNK
Price: 37.95 GBP
Availability: InStock
Rating: 4.6 (538 reviews)

£37.95

Pond treatment that targets three known problem areas in ponds, green water, sludge, and nitrate levels, which are usually the cause of green water or algae. Contains 1L of Envii Pond Klear, 6 Envii Sludge Klear tablets & 6 Envii Nitrate Klear tablets.

Ensure your pond stays crystal clear throughout the year with our Annual Pond Treatment. This comprehensive set includes 1 x Pond Klear, 1 x Sludge Klear, and 1 x Nitrate Klear, designed to tackle green water, sludge, and nitrates in your Koi or garden pond.

Each product works effectively, even in low temperatures, making them perfect for year-round use. Whether it’s winter or summer, these treatments maintain clear, healthy water for your pond, keeping it beautiful and balanced no matter the season.

Give your pond the care it deserves with this all-in-one treatment kit, ensuring your water remains clean, fresh, and algae-free throughout the year.

Check pH of your 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
Dramatically reduces nitrates in ponds to protect fish
Works as low as 8°C

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.

Pond Klear, Sludge Klear and Nitrate Klear Bundle

Annual Pond Treatment

£37.95

Frequently Asked Questions

Yes. All three products contain only natural ingredients that have been derived from natural sources.

This pack treats several problems and for ongoing maintenance, we would recommend just using Envii Pond Klear.

Yes. All of our products work with or without filters, filters just speed up the clearing process.

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.

Overall rating: 4.320197 / 5 from 609 reviews.

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Review highlights

Reviews

Some improvement, but not there yet

"Pumped out my pond filter and then added Algae Klear Xtra and also Pond Klear weekly for the last 5 weeks. There is some improvement to the algae but it has not worked as well as I hoped it might. The stones are still covered, which is a bit disappointing, but the plants are not as covered with green strands as they used to be, which is a good result. The water has been very clear throughout. Not quite sure what to do next. Might give it another 5 week dose, but it's now getting a bit costly. Envii have been very helpful throughout in giving advice but I'm beginning to think that algae are quite difficult to clear."

— PETER A. (3/5)

I have used pond clear

"I have used pond clear extra which killed my blanket weed also two I ltr bottles of pond clear over an 8 week period and still my pond is green. i have also checked the balance of my pond which seems ok."

— David L. (5/5)

Pond Klear

"We used your product after our pond became very cloudy and murky and within a few days it cleared. Excellent result"

— Eileen C. (5/5)

No good

"I have now spent over £100 and my pond is like pea soup, your products are not working at all. My pond is in full sun light allday. I am about to give up and get rid of my pond. Not happy."

— Steven P. (1/5)

It certainly cleared my 5000ltr

"It certainly cleared my 5000ltr pond within 2 weeks"

— John J. (5/5)

Excellent product. Cleared up the

"Excellent product. Cleared up the blanket weed and now the pond looks great!"

— Richard G. (5/5)

My green pond.

"Very quickly cleared my green pond."

— Keith (5/5)

First time user. Its title

"First time user. Its title says it all and fast working."

— R R. (5/5)

It didn’t make the slightest

"It didn’t make the slightest difference to my green pond water. And it’s not a big pond."

— Rosalind (1/5)

"I have been using Sludge Klear for some time, it is a very good product. I would recommend it."

— Michael (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.