Originally Posted by TygGer
I was reading on some website and it was unclear as to which is the correct way to set up rocks, live or base.
The way I see it there is no "correct"
way, just differing alternatives.
Personally I bury the support rock beneath the sand. Others rest it atop the sand or just below it while more still use the PVC
technique. All works the same to a degree.
The main consideration you should give it is how stable your final structure will be and what fish you will be keeping. The latter being moreso important. There are many types of digging/tunneling fish and inverts alike that can undermine the stability and cause the rock to tumble. If you plan to keep these kinds of animals you should build accordingly.