"Other than the aforementioned leakage, which in my case was mild, and the fact that the screen gets clogged easily, this is a wonderful product. Cleaned our 50 gallon tank in less than 20 minutes. The screen does pop out and there is no danger of rocks or fish being taken out so I wonder why even have it other than for looks. It really isn't needed so just get something and pop it out and you are good to go."