We kept this in our Puffer tank. They couldn't live with anything that would keep the tank clean, so we had to clean the sides. It was a brackish tank with lots of brown algea, this worked in one swipe.

Pros: Works well, easy to use

Cons: Can't think of any

I just purchased this on Friday for our fish tank and it works great. I used to put my hand in the tank and clean the glass from inside. Now I keep my hand dry and it works awesome.

Pros: Cleans well

Cons: Nothing

but kids can use them and get some of the algae off,.

Pros: great magnets

Cons: not too great for cleaning

This product is fabulous! It works well for cleaning tanks and we've had ours for quite a while!

Pros: Excellent Product & Long Lasting

Cons: None