Yes this product may be easy to use, but it can also be very dangerous for your fish. As this product states on it's label it removes chlorine and breaks apart the chloriamine bond. I may not be a chemist, but I do know that chloriamine is a bond between chlorine and ammonia. So if this product removes chlorine and breaks down the chloriamine bond, then what byproduct gets left behind? Why that would be ammonia which is very toxic to fish. So again this product can be very harmful to your fish.

Pros: Easy to use.

Cons: Potentially very harmful to your fish!

This is very easy to use. I'm assuming works because my fish do very well. I make sure I use this at all times (even when just adding a little water to my tank).

Pros: Gets water ready for fish!

Cons: none

This product worked well. I was very happy with it.

Pros: Works great

Cons: Small bottle

This does a decent job removing chlorine

Pros: Removes chlorine

Cons: Reverse Osmosis system is better