POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens, Fountains - Natural Active Ingredient - EPA-Registered

This stuff is amazing! I have a 40 gallon freshwater tank with lots of tropical fish in it. My tank is well established, but I've been having some issues with algae growing on the tank decorations and on the glass. I do water changes about once a week, I also have a very good quality canister filter. But managing the growth of algae was a major problem. So I bought a bottle of the Algaefix and I used exact as directed on the bottle. Within a few hours my tank was crystal clear. I couldn't believe how fast and efficiently it worked. I'm happy to report that all of my fish are doing very well. This product did not harm them at all. I definitely recommend this to anyone who's having an issue with too much algae growth, just be sure and follow the directions on the amount to use.

I have used this in my fountains for years. Works well and is a great product when used as directed. Excellent water clarity

I use this in my 75-gallon front yard pond, which has 4 feeder goldfish and solid filtration. At first, I wasn’t sure it would make much of a difference—but after several applications, the water suddenly turned crystal clear. That said, it doesn’t stay that way long. We usually need to reapply once a week, and sometimes even hit it 2–3 days in a row when it clouds up again. In my experience, the dosage instructions are too conservative. The recommended amount didn’t do much, so I doubled the dose (safely) and that’s when I saw results. It’s a bit of a process, but if you stay on top of it, it really works. I’d give it five stars if it lasted longer between applications or worked faster, but overall it’s a solid algae control solution.

This really works because I pour a lot into the pond with out of control algae growth. I didn't even read the instruction, just dumped a cup or two. The algae turned brown and completely stopped. I haven't seen any more growing since about a month after using the product. Two weeks after, I added some fish in there and they are OK.

Works great! This has been the best solution to the algae in my pond and on the rocks in my waterfall without harming my fish! Highly satisfied!

Works, but be very careful!! It will kill your fish!!! I read the instructions and tried to aerate the pond as best as I could. Unfortunately it still killed all of my fish overnight. I can see the bottom of the pond now, but at what cost. Didn’t remove all the algae at the bottom however. There is still a lot that can be stirred up.

Great product, cleared my pound of an insane amount of hair algae in 3 days. Water lilies and fish show no signs of stress.

This is without a doubt the worst pond algaecide product I’ve ever purchased. I used this the day after the water feature guys cleaned and filled the pond. Three days later I added a bit more. The next day the pond water was green - not cloudy - green. A guest said the pond looks like the Chicago River on St. Patrick’s Day. It does. The pond water looks as though it’s dyed. I called the 800 number on package and I have left two messages. No one has responded. Caveat emptor!!!!!!!!!!! I had to give a one star rating in order to post the review, this algaecide is a waste money.

excellent

It works but expensive for ponds

It beats buying the smaller bottles.

Amazing results on just two days. Two months of algae bloom due continuous rain and sunny weather. Never experienced this in with my pond before. Fishes could no longer be seen. Fantastic API Algaefix ... My pond is restored to be crystal clear again.

This product works very well. Fish are very happy and I have a beautiful pond once again.