If I have the pump on the top of the canister like so: http://www.jonolavsakvarium.com/eng_diy/canister_filter/canister_normal.jpg (except my pump is internal, not external) won't it be really hard to get the water flowing? I mean, how am I supposed to prime it unless I put a valve on the tank water in pipe and then fill it to the top and put the lid back on?
If I switched positions of the pump, wouldn't it self prime?
If I switched positions of the pump, wouldn't it self prime?