Rated 3.2 out of 5★ by 5reviewers.
Rated 1 out of 5★ by fwimble sand would be more effective I use this in my 20 gallon tank, and even when i leave my filter out and let it circulate around for a week, it does literally nothing. It was probably the worst algae control product I have ever bought. Don't waste your money on it, go buy Jungle brand No More Algae. That stuff actually works, and quite well at that. 11/05/2012
Rated 5 out of 5★ by Kyuzo This product work as it is said to do. First time using this product and it works great didn't had a single problem with it. Did what it suppose to do I'm happy with this product. 01/04/2013
Rated 5 out of 5★ by CrisIT Does what iy says om the tin :) I've had an algae bloom problem for weeks, I tried replacing the water numerous times, cleaning the tank and equipment but within a day the luminous green water would return. The biggest problem is that the tank is in direct sunlight.I decided to try using this product....Within hours I noticed a difference, by the next day the algae was gone, no more luminous green water....Very happy with the results.... 08/31/2013
Rated 1 out of 5★ by Nisha It cleared our tank AND our fish! We experienced a huge algae bloom in our fish tank. We relocated the tank thinking that it may have been exposed to too much light. Then we did a 40-50% water change and replaced the filter. Nothing changed. Based on a recommendation we purchased this wretched product. We followed the instructions to the letter, and within 3 days ALL of our fish died- including our plecostomus, nails and newborn Black Mollies.So yes, this product got rid of the algae. Our tank has never looked better, but now it's empty.... 02/07/2014
Rated 4 out of 5★ by Cburgess88 A great product! ;) I bought this for my 30 gallon fish aquarium. when I say my tank water was a bad green it was a dark green and you couldn't see through the tank! I cleaned and cleaned to get rid of the algae bloom but that wasn't working. So, I purchased this and treated my tank. The next day my entire tank was soo much clearer than before. I did have to treat it twice to get it fully clear. But I love the product! Great experience! 11/23/2013