I have a crowded room as well, gravel is easier to clean,
I just think the roots of some of my plants rotted in sand >.<
hmm good luck and it looks nice to me.
Thanks! I think I'll go with gravel for the little tanks. But gosh a large size critter keeper is $16 and a 10 gallon glass tank is $14! The medium size is $12. That's awful expensive for a bit of plastic