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

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.

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

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.

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.

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

It has cleared our water but (might be just a coincident) three fish died after the 3rd dosage! Not used it since.

I popped some of this in my pond a week ago and it went to work straight away. The water is crystal clear and I am beginning to see the actual liner of the pond. The addition of barley extract is an added bonus as it has halted the spread of the dreaded blanket weed. The fish seem to be unaffected in any way and it's a real pleasure to see them all the way to the bottom feeding. The amount in the container will be sufficient for quite some time and is good value for what I paid. Overall it's a great sludge gulper that works fast.

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

This product just did not deliver what it promised i.e. a clean pond. It is totally ineffective and waste of money. All claims made for the product are false. Extremely unhappy and feel cheated of my money. Would never buy it ever again.