API Pond-Zyme Sludge Destroyer with Barley for Ponds, 454g Container

Have used this product all the time does seem to help in the Warmer months, to keep the pond water healthy

Bought this for my new wildlife pond. Really cleared up the sludge that had built up of its first summer. Water is crystal clear and does not smell of stagnation anymore. Highly recommend.

The product arrived labelled sludge remover but as we had had so much trouble even finding Pond zyme plus in Britain we decided to give it a go anyway. It has certainly made made a difference to the pond weed accumulating but I wish I knew whether this is the same stuff we used previously ie pond zyme plus.

I was disappointed with this product as it does not deliver the clarity of water that I was led to anticipate.

I have a small outdoor pond with frogs living in there. The water was dirty and smelly. I tried a few natural things without chemicals but nothing worked until I used this. Now after a couple of weeks I can see the bottom of the pond and the smell has gone.

Was delivered on time and the contents were first class and would order them again when needed

Pond had new pond syndrome (turned green soon after setup) For months I had tried other things and although some helped a little I was begining to think it was never going to clear. Used this and although nothing happened straight away, it has actually worked. Taken just over 3 weeks but pond is now clear. Looking forwards to actuly being able to watch the fish now.

I used to use this in our pond with two fish and it did seem to help the water quality. I have since moved and this house has a pond with 14 fish and I tried this at first and again I could at least see the fish but in the end had to install a full pond filtration system.

Best I’ve found to kill string algae and control my pond. Water stays clear. Red eared slider is happy. Fish are thriving. Totally worth it and I’ll be using this forever.

Very happy with this exceptionally easy to use product. Very happy that pond is starting to look better

A little goes a long way. We add it and by the third say the water is crystal clear. We've used it a few time overthe year and it's amazing

Very good, did on excellent job on my swimming pool converted to koi pond ( still 5' deep) very happy with this product

Doesn't work. Koi eating it all up, my clear pond water suddenly all murky and covered with brown scum.