Correct placement is on the same side as far as I know from my readings and personal usage. the idea is you want a nice laminar flow from side to side bringing all the garbage in the water column and substrate all to one side. I think having the intake on the opposite side would stop the laminar flow also so you wouldn't have good circulation.I just got my new mr aqua 12g long set up and running.
I also purchased an eheim 2213 canister filter for it. I decided to place my outflow and intake pipes at opposite ends of the tank but noticed that many people place them on the same side of the tank.
Are there benefits/disadvantages to doing this? I figured i could get better flow placing them at opposite ends but maybe i dont quite understand how flow works in the tank yet. Or maybe it doesn't even matter?
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