heres my Q. im setting up a 75 gal fresh water planted tank with dirt sub. and was wondering if 165 gph from an Eheim 2215 clasic would provide enuf cictulation. i curently have a mag 350 on my existing 30gal and it doesent seem to have good enuf flow to keep algie off the plants, even thow it's sposted to have a flow of 350. can any one shed some light on this for me. thatnks in advance |