PVC is your best friend.
I used it to form a lean to. that the
rock sits against. that way I could pile it up high and closer to the front of tank.
Also you can use it to make a shelf. but I think a lean to is better. drilll lots of holes in it. If it still isnt stable than use tie wraps and drill holes in the liverock. It drills easy.
"seven dollar a pound and Im using my dewalt on it!!"