Positioning of Intake and Return?

[vanimate]

I'm running the intake on the lower right corner, and the return on the left about a inch below the water line. Never thought about why until this minute...Should I re-evaluate? I currently have a 29Gal with a XP2...

You should be fine. The xp2 should give you enough circulation in your 29.

 

[guppy]

I like the intake low towards a rear corner and the return towards the top at the other rear corner. But I usually use more than one filter. Think about cutting a slot and framing it, that allows you to adjust the position of the tubes and still looks good.

 

[redtailfool]

My intake is as far away from the out nozzle as possible. Intake on the bottom, to collect dirt and the out has a nozzle outfitted to skim the surface of the water.

 

[red oscar]

i have 2 fluval on a 125 gal one on each end intake on bottom output on top

 

[fish head )'>]

125g intakes on left, outlets on right, criss-crossing from top to bottom.
(404 fluval and wet/dry)

 

[loach43]

I don't know if this is supreme, optimum etc. but as a personal habit for community tanks:
Intake= low RH side (about 5-6" away from the side glass, Output =upper opposite end of the tank (eheim diffuser added) so that surface water moves enough to keep protein scum away. Airstone/bubbler near the intake also (but not close enough to lose siphon on the intake!).

I like to have intake and output opposite ends and med strength "bubblers" opposite ends as well. Creates a good circular water and oxygen flow. Keeps fish that like strong current happy but wouldn't blow away an angelfish.

 

[pesky2118]

I've got almost the same setup as you...6 foot tank (125 gallon) and a eheim 2250. Mine is in-wall between living and dining room, and the design requires me to have inlet and outlet on same side for best aesthetic purposes. I have the inlet about a foot deep, and outlet right on top of it. I also have a powerhead right next to the inlet/outlet. I'm happy with the setup, although without the powerhead I don't think I would have enough circulation, with both tubes being on same side.