Looking for a Hydrometer and a canister filter.

[redearslider]

Okay, thanks Brad!

still makes me nervous only running powerheads in the tank :\ But I will trust the experts

Another off topic question, some of the live rock that I got was pieces of Lava Rock, this seemed pretty unconventional to me, will this cause any issues? It looks cool because of the tunnels, and there are little creatures popping out of it just as the other rock has.