I finally decided to use one of the big pieces of driftwood we've had lying around in my 10 gallon. That tank always just looked so.. bare to me. I'm still trying to figure out where things should go, and the anacharis and hornwort are a mess right now, but I figured I stressed everyone out enough for now. Ugh, I scrubbed the heck out of the wood and it's still covered in black beard algae though. I'm going to get some java moss and grow it on the wood too; I've always loved how the moss-covered wood looks. The RCS are already LOVING it, and the guppies are curious.