envii Water Feature Klear, Natural Water Feature Cleaner, Chemical Free Treatment Safe for all Wildlife & Pets – 20 Tablets Treats 2,000 Litres of Water

I used these in a large catchment pit in my garden - a stone lined pit built perhaps a century ago for capturing rain water for cattle, but no longer in use as such - I use it as a water source for the garden. Several thousand liters, but it gets quite green in the summer.A single treatment using the whole packet cleared the green and it stayed clear - though it has to be said that the water remained murky for other reasons.Probably I wont bother again as it is only an aesthetic change - but I am giving the product 5 stars because it actually did what it said it would.

Initially this did not work well. I bought it to keep our dog paddling pool clean. However, the second run is working better with a double dose, so I would say it has been successful because it is dog friendly (no irritation to their skins and drinkable). Will continue to use and have recommended to a friend. I should add that this has been an incredibly hot period of weather and we live in the country, so truly testing.

Used this in our water feature, thought I would try this product but was disappointed did not work as well as I would of liked, left a powdery residue in the bottom and was not as clear as it should be. When this pack has finished would not buy this product again. I will go back to the previous product I bought a little bit more expensive but worked brilliantly also kind to wildlife.

I don't actually know for certain if this product works but I'm happy with it at the moment and am trying it for a few weeks.If I still like it, I'll buy more.

Brand new water feature. Set the water feature up, followed the directions for adding the tablets and repeated a week later as instructed. In just two weeks my new water feature was full of algae and looked a right mess! What a complete waste of money!Out of desperation I added some white vinegar to the water in the water feature four days later the algae is gone and the water is clear. Forget all those expensive treatments, all you need to add to your water feature is some white vinegar. Job done, lesson learned! Don't try adding white vinegar to a fish pond though!!

Works really well, bird bath very black and mouldy, this product keeps it all clean, I have tried quite a few and this one actually works, well pleased

Not sure this does anything at all.

Didn't notice a huge difference at first, seems to be better at keeping already ear water ear, rather than cleaning already murky water. Once I cleaned it out I put one of these in, and maybe put one in every month or so and noticed less maintenance needed to clean water

nutze ich schon einige Jahre, schnell und zuverlässig einsetzbar

Appears not to be working.

Efter 10 dagar blir det alger ändå, lagt i 3 st tabletter, rent 69 litet vatten, nej detta var inget bra

Water snel weer helder.

Sembra funzioni, anche se io ho aumentato le dosi rispetto a ciò che è consigliato nelle istruzioni.