wow, thank you everyone !!!!!!! Goose the tank is 24 inches high, and the sand originally was 3 inches, but it is deeper now in some places because the goby moves it all around and the tomato like fanning it out in the front , that is why it looks real deep in the front. The caves were my main goal. that way the fish can still hide but everyone can still see them. Piggy the rock with the whole is "mator's" home the clown fish, he loves it !! the rock is mostly base reef rock that has been in the tank from the begining, only added about about 8 lbs a month ago which is about 40 lbs total , but still didnt have any live rock. !! So i got lucly with the tonga branch that was fully cured at my LFS. It was 7.99 per pound and it looked better then the cured fiji rock !! hopefully the rock will seed the rest and i can add like 10 more puonds of licve less which will be less then an inch !!! thanks again everyone.