Planning on running an Eheim 2228 (277gph) and a Rena Filstar L, formerly known as Rena XP3 (350 gph) for my 90 gallon tank (48"L x18"D x 24"H). The Rena comes with only the duckbill, and the Eheim only the spraybar.
Also have available 2 power heads with duckbill rated 140gph each.
I do understand there are variables, but generally speaking, with this equipment, what type of outflow configuraton would you suggest for a moderately planted/moderately stocked 90 G tank???
Im running an xp1 w/spraybar and an xp3 w/duck bill. I've got it where the spray bar is on one end and the duck bill is facing the front glass on an angle. From what I can see I dont have any dead spots. This is all on a 75 gallon.