Does dry rock have to be glued together? Does it have to be on placed non the glass? As you may see I have loose rock sitting on sand, and I think may need to drain tank and start all over again 30 lbs of sand. 55 gallon tank with 30 lbs of dry rock. 30 more lbs on the way. Ok ok I now know I should have waited and put all rock in at one time buy here we are.






