<a href=showthread.php?s=&postid=8147399#post8147399 target=_blank>Originally posted</a> by sir_dudeguy
well you can do that yes, but thats not going to do your biological filtration. For biofiltration just get about 3 lbs of live rock. Thats what i got in my 2.5 and i have a whisper 20 on it for flow.