Tunze for a 90

[bonobf]

I am setting up a 90 gallon tank and want to get suggestions on what kind of pumps I should use for water movement. I have a corner overflow built into the rear left side of the tank. It is the standard 48 inch long tank, as well. Also, what is the maintenance schedule for the pumps and what needs to be performed? I am considering getting the rock to put the pump in and dont know if I will need to pull the pump and rock out, and if so, how often.

Thanks for any help you can give me.

 

[rvitko]

I would get a 6000 and a single controller. In a perfect world you should only have to clean the pumps every 6-12 months but with high KH and Calcium and occasional overdoses, fine sand and debris, it is a good idea to clean them every 3 months. The rock should be a top rock in your structure for that very reason. The pump just pulls out of the rock, it is easy to remove so as long as the rock is not buried under other rocks it is no problem. If you don't clean them they seize up and can be ruined if it isn't detected. The 6000 sounds an alarm if this happens but it is often too late and has to come in for repair if the magnet is seized with lime or sand.