I have taken my 70g fresh water tank apart, am returning the fish I had in it to the lfs
. I plan on making this tank fow(some)lr
. I have 20g and 30g reef tanks so I would like to have this tank with some bigger fish without corals ect. My question is, do I need to use sand as a base or can I use the tons of pebble rock I used for the fresh water, cleaned of course. I will be using a filter of some type and a skimmer. Thanks for your imput.