Originally Posted by BriDroid
I'm running an Eheim 2236 and two of the Hydor Koralia Nanos. I think they are 240 GPH. One on each side. I'm getting great water movement with them.
What size tank u have? I just don't want it to blow away my substrate. I have a marineland 900 it does the water circulation, power head, utility pump and I have it set up for the water circulation I put it in for about 5 sec. everything in the tank was blowing around it blew to moss off one of my rocks too so I had to shut it down. I just don't want a repeat of that I think I'm gonna try one 240 and a 425 koralia an see what happens.