Originally posted by FishBait912
can any ordinary rock or anything go into the canister?
NO! You need a very porous materials and there all all kinds.
Lava rocks are cheap but i dont trust them[too much cleaning and need replaced often]..Seachen matrix is and very well informed choice, there are all type s of bio media out there. Just take your time and pick what is best for your needs.....


I am wondering if your getting a commision from Rena??;)