yank30265
Member
i started my reef tank in the spring. I found a 125 w/ beautiful cabinet; 2 cannisters, python(the long one), heaters ....for 150 bucks. I knew it wasnt getting set up the next day(no money) so Id do it alittle at a time. I have the sand, coral decos 2 pieces of live rock from along time ago(been dry for awhile). I have flourescents 10000k 2 36" and 2 36" actinics. Not enough for inverts and corals but it will sustain fowlr. i need salt, test kit, and lr right now. Heres my question. Water displacement... If i have 120 lbs of sand, and the coral in the tank; I no longer have 125 gallons of water. Now if i put 100 lbs of lr in the tank; Ill have even less water. Soooo how much water displacement is there and what would be a safe amount of rock to put in if there isnt 125 gallons of water in there? I want to cycle the tank w/ the rock in it and be done w/ it.