I've had this peice of driftwood sitting in my terrarium for a while now because the guy at petco recommended it and so far I see a trend. The trend is I drop a few crix in every night and one manages to not get eaten by my two whites and decides to hide in the cracks of this old wood so I'm going to burn the wood and to not leave open space I want to install a waterfall does anyone have any favorites? And what's a reasonably priced waterfall