Algae Klear Xtra

Name: Algae Klear Xtra
Brand: envii
SKU: AKX500ML
Price: 20.95 GBP
Availability: InStock
Rating: 4.6 (367 reviews)

£20.95

Size 500ML 1L 5L

500ml Treats 10,000 Litres

Fast-acting pond algae treatment that targets and kills submerged blanket weed and string algae within 2 weeks. Works at any temperature and prevents the re-growth of algae due to its unique UV light filter.

Say goodbye to unsightly algae and blanket weed with Algae Klear Xtra, a highly effective pond algae treatment that eliminates algae and blanket weed within 2-3 weeks. This unique formula targets algae directly, killing it down to the root and preventing regrowth.

In addition to its powerful algae-killing action, Algae Klear Xtra contains a UV light filter that reduces the strength of UV rays, helping to prevent new algae growth and keeping your pond clear and vibrant.

Ideal for treating algae submerged below the water's surface—typically on pond walls, pumps, and plants—Algae Klear Xtra is the go-to solution for managing stubborn algae. If you're dealing with algae floating on the water’s surface, you’ll need Blanketweed Klear. Not sure which type of algae you have? Check out our Ultimate Guide to Blanket Weed for more information.

To keep your pond algae-free long-term, pair Algae Klear Xtra with Pond Klear to reduce excess nutrients in the water and Pond Equaliser to maintain a stable pH level.

Check pH of your pond before using and use Pond Equaliser if required
Use in the morning when most effective
Use 50ml of Envii Algae Klear Xtra per 1,000 litres of pond water
Add to a watering can of pond water and distribute evenly in pond
Repeat after 7 days if algae is still present and further treatment is required

Fast acting formula that kills pond algae down to the root within weeks.
Use at any time of year.
Kills algae and blanket weed below the surface of the water.
Contains a UV light filter to prevent new algae from growing.
Is safe for fish & plants.
Use in conjunction with all other Envii pond products.
500ml treats 10,000L, 1L treats 20,000L & 5L treats 100,000L.

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.

Algae Klear Xtra

£20.95

Frequently Asked Questions

Algae Klear Xtra targets and kills submerged blanket weed and string algae that is below the surface of the water, attached to the pond walls, pumps and plants.

Yes. When used correctly, Algae Klear Xtra poses no danger to any fish, wildlife or plants. It is important that you check your water parameters before using Algae Klear and stabilise if necessary.

Algae Klear Xtra typically works within two weeks to completely kill off algae within ponds. If after two weeks there are still some remnants of algae, a repeat treatment can be applied.

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.

What is Algae Klear Xtra?

This video explains everything you need to know about Algae Klear Xtra.

Key Ingredients

Copper Sulfate

Copper Sulfate is a highly effective inorganic compound used across multiple industries as a pesticide, algaecide, food additive, and wood preservative. When applied to ponds, it targets and breaks down the proteins in algae cells, swiftly eliminating unwanted algae.

Overall rating: 4.550409 / 5 from 367 reviews.

AI Generated Review Summary

Algae Klear Xtra effectively eliminates algae and blanket weed within 2-3 weeks. Customers praise its results, effectiveness, and ease of use. It also contains a UV light filter to prevent new algae growth. For floating algae, consider Blanketweed Klear. Pair with Pond Klear and Pond Equaliser for long-term pond health.

Summary topics

Effectiveness: 10%
Dosage Effectiveness: 4%
Pond Clearing: 4%
Ease of Use: 5%
Treatment Effectiveness: 3%

Review topics: ["instructions","delivery","results","problems","improvement","water","weather","service","solution","use","price","works","pond","difference","dose","treatment","cleared","algae","fish","koi","weed","signs","supplier","4 stars","application","blanket weed"].

Review highlights

"Great product - used first dose already with good results." — VerifiedCustomer
"Impressive results; has been treated three times now and cleared pond well of algae." — Anonymous
"Great product, great service, easy website, thanks" — VerifiedCustomer

Reviews

Keeps blanket weed under control

"Used regularly (weekly), this keeps the blanket weed in my pond, which gets a lot of sun, under control. I also used the winter product during the colder months. The pond is full of wildlife so no harmful effects on them. Before discovering this product the blanket weed was really invasive. I have been using it for quite a few years now. Company really helpful if you have a problem or question. I only gave it 4 stars because, in my case it hasn't completely eliminated the problem. Would give 5 stars for customer service."

— Fiona M. (4/5)

Very impressed with the results. I

"Very impressed with the results. I had tried a barley based treatment first but it made the problem worse but I noticed dramatic results with the Envii product and this produced noticeable results in a couple of days. Would certainly recommend."

— Richard M. (5/5)

Very happy with this product!

"Very happy with this product! I have been using it for several years now with excellent results and a good company to deal with."

— Ronald S. (5/5)

Still to use

"Looks a really good product. The instructions are clear and easy to do"

— Su (4/5)

Excellent product straight forward to

"Excellent product straight forward to use and very effective. Worked quite quickly"

— Caroline H. (5/5)

This product is taking a

"This product is taking a long time to work. Water still very green"

— Anthony F. (3/5)

The first week it hit

"The first week it hit the blanket weed. The second week not do quick let's Hooe the third week does it. Other than that the company were quick to answer my questions. Let's Hooe it works"

— Diana L. (5/5)

I have used this once

"I have used this once and so far it has been quite effective but because of the cost I am not enthralled about using it every week on my pond which has a capacity of about 60,000 litres"

— graham (3/5)

Great service from Envii! Have

"Great service from Envii! Have used the Algae Klear Xtra twice now. Haven’t seen any noticeable difference in the string algae yet so I’ll persevere with weekly treatments."

— Edward W. (5/5)

Allways use these products. Good

"Allways use these products. Good price, work well, quick delivery"

— raymond o. (5/5)

Q&A

I have a small wildlife pond in my garden (circa 300l) with a thriving population of smooth newts. It's recently been getting lots of thick gloomy string algae growth though. Is the product safe and appropriate to use with the newts there? Thanks: Hi Henry, Yes, Algae Klear Xtra is safe to use with newts in the pond. This product contains copper sulphate which can be harmful to aquatic snails and other crustaceans, so we wouldn't recommend using this product if there are snails present. Many thanks, Envii

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