enviiSludge Klear Pond Sludge Remover, Natural Bacteria Sludge Buster Digests & Controls Organic Waste, Safe for All Fish & Wildlife, 6 Tablets treats 30,000 litres

Great item for clearing up the sludge, and although a little dear it works and so is value, give real water clarity ansd lasts just over four weeks when it needs tobe repeated

Quick delivery of the product.Having done a major clear and tidy of our pond early this summer we disturbed a lot of sludge and algae and our normally clear water became very murky.Using this with pond klear and it's slowly working. I can see where sludge is clearing off the stones on the bottom and our water is getting clearer.You must clean the filters and pump every few days. I have been mesmerised by how much sludge they're getting.

Using a pond net to scoop most of the sludge out was the best option to be honest. Use a filter with UV light to kill the pond algae and clear the water over time. Sludge Klear was average.

Works perfectly so far..pond water stillness & clear

Did a 80% water change in garden pond in early spring, vacuumed as much waste as possible out of bottom of pond, used these tablets to take care of the rest, they cleared the water but used a lot of filter medium changing every other day which was expensive, we're now almost in July and the water has cleared and remaining clear. I have not brought additional treatments as I dont feel its required at this stage, if the weather does change and we get more sun and heat then I feel we may need to re-dose. However so far they worked when required and no further green water issues.

It works well

No improvement in pond at all, used full packet, waste of money

This item is very good cleared pond within 24 hrs very pleased with it