Eco-Friendly Aquarium Water Purifier Cube Filter with Activated Carbon - Ultra-Strong Filtration for Fish Tanks, Ponds & Water Purification

Within an hour I could see a difference in my tank! This lasts a while, too, just keep up with rinsing it. Great purchase!

This cube has been in our tank a year and a half. We don't have to worry about algae, or cleaning the walls of the tank. Between this cube, our pleco, and our filter system, we don't have a worry in the world. We can leave on the semi for weeks at a time, come home, and the tank is immaculate and clear. We do a half water change and suction the rocks probably every 6ish months. Other than that the tank sustains itself with this. We love it!!

I put this in my aquarium hoping for clear water as it says its suppose to do, but ever since I added it I've had 2 turtles die within days apart from each other. I've had these turtles for months and never had an issue until I put this cube in there. That was the only thing new that I've added into the aquarium so I'm assuming whatever is in this product has slowly been killing our turtles. My kids are devastated. It breaks apart in the water, and even when its been changed, it gets filthy and dark right away because of the broken off pieces that hides in the gravel. I'll never order anymore of these ever again.

It has been in now for two weeks and nothing. Waste of money

This is amazing! I’ve heard people say to the contrary, my canister filter works great I don’t have a UV light though and this has done an amazing job cutting algae and making the water sparkle!! If you don’t clean a tank you can expect miracles but Tori well taken care of tank and a good filter it actually made my water sparkle and keeps algae at bay! I highly recommend it and when this one has Ben used up I will definitely purchase again!

Product did arrive damaged on two of the corners. Hopefully it doesn't effect the Product its a bit bigger then a realized it would be but also I didn't read it says to watch it with just water before you put it in tank I'll have to see if anything comes up in a few days that is noticeable. My tank can't be any clearer then it was without it.

This is an incredible product. I have a small aquarium with Beta and was having a terrible time getting the water clean and keeping it clean. I just 3 days I have a sparkling clean aquarium, my fish is much happier and I'm sure healthier. Thank you!

Had to re-order for exchange. Description says notify if broken, it had several chunks out of the edges that weren't visible in the tight shrinkwrap plastic. Exterior packaging intact, missing chunks weren't in wrapper