API POND ALGAEFIX (8 fl oz) Pond Algae Control - Copper Free - Clean, Clear Water - Up to 2400 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.

Excellent product, easy to use, works quite fast! Water in my little pond is clear! Highly recommend. I will be returning. Thank you.

Works better than any other product I've tried to control various forms of algae in a 3000 gallon pond. Water gets and stays clearer than I've seen it previously when using other algae control products. I don't have any fish to be concerned about but it hasn't harmed any of the water lilies or other pond plants. Only downside is for me it can be a bit expensive if I use as much as the directions say every week, so I'll often stretch out the applications to a lesser frequent schedule and I've found a frequency that works well for my situation.

Works very well. Have bought it for several years. A little pricey but works.

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

Maybe I was doing something wrong but this product didn’t put any dent in the algae over growth in our fishpond. Getting a GOOD UV light in a special filter outside of the pond, DID WORK PERFECTLY, but I put in several doses of this liquid product into the pond, as directed, for several months before getting the UV light. During that time I never had any improvement in the algae situation. So I can’t actually recommend it highly.

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.

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.

Ordered on 10 January 2025. Delivered on 20 January 2025. Thank you.

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.