Ah, I was worried that it would be very light and unable to hold down the top soil. Would the soil get all over the place?
And unfortunately, I'm very stuck on ADA. I've heard so many good things about it and now that I can finally put forth the money to make a tank, I wanted to get some good stuff moving (but all ADA would cost too much)
Most of the things in the area seem to be chinese knockoffs (nothing against chinese, heh) but i guess I should look around a bit more.