APIPOND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound Container

It works. Use it exactly as directed and watch the amazing result in improved water quality and clarity. My fish say thanks.

This stuff seams to work well and it hasn't harmed/killed my Koi yet, so that's a plus. I have an 800 gallon Koi pond with six Koi in it. I started using this about a month ago when I brought my pond out of winter hibernation. The water was pretty green last month. I initially went with half the dosing than prescribed because you can never be too cautious with some of this stuff even when they say they're "fish safe". I monitored the behavior of my fish for about a week and started increasing dosing. So far so good. About a month later, my water is crystal clear and my fish seem happy. I will continue to use this product along with a liquid-based natural bacteria product that I use as well.

It works really well.

Keeps water cleaner when used as maintenance. I can see my fishes now that the water is clearer. Safe for fishes, and you get a big jar. Stock up when it's on sale.

Does a great job of recucung sludge in my little 11' x 11' fish pond.

I've been using this for 3 weeks as directed, but I don't see any real change in the water. I'll keep trying, maybe it just takes longer.

Update- I didn't need to wait a few more days, my pond is now totally clear. Will keep using this along with the algaecide.Last year I found and used an algeacide that worked like a charm for my little backyard pond. It kept it free of algae all summer long, which was a first for me. It is starting to warm up, so I used my tried and true again and my pond kept getting progressively greener. It wasn't working at all.I drained my pond, refilled, then drained and refilled again and hit it hard with the algae control. Still looking terrible. I ordered this and put in the first dose. The first thing I noticed is this floats on the surface for a long time before it sinks and I was worried it wouldn't do much. That night we had a bad wind storm and one of my potted plants ended up in the pond. Great, even more mess. I netted out all the debris I could and figured I'd have to drain and refill this week.This morning I go out, and though all the algae isn't quite gone yet, it is much less so. The water is still a bit murky, but I can see the bottom. With the algae as bad as it was, then the wind storm, I figured it would be a total disaster and it isn't. I think due to this product. I removed and hosed out the filters and one thing I noticed is that the gunk in them is darker brown in color than usual. I think this is the waste and stuff coming out. I gave it a second dose today and hope that within the next few days it is back to normal. It is only going to get hotter, I need to control it now. Anyway, I think this works pretty well, with all the issues it is much clearer than I anticipated it being today. I will continue using and update my review.

Sludge destroyerWorthlessWhy did you pick this product vs others?:I've already put my hundred words on here! It doesn't work along with Aqua Clear and Aqua Essential. I have called the number posted on the products numerous times, leaving messages to be called as soon as possible as it is killing my fish. Obviously, nobody cares because I have not received a phone call yet. This has been going on for many months and its become worthless to me. I need help with these products. Who posts a phone number that's never answered. Messages have been left but no returned phone calls. Worthless! How can people like this run a business? This is the most ridiculous thing I've had to deal with.