The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
I'm currently running 9 of them on my tanks. They are a great filter. One of my Rena's is over 10 yrs. old, and have never had a minutes problem with it.
They are one of the top canister filters available IMO.