i guess a lot of you must be tired of new tanks and all the questions, i've read the forums, these and others and it seems each tank is a new challange for each of us. I had a great reef about 10 or more years ago, a 110, i kept for a year and a half before i lost it to a fire. I've had tanks, fresh and salt for 40 years. The questions i have are basic. I bought a oceanic 72 by 24 by 18, hex front, and i can't gt a line on the gallons, cubic inches devided by 231, gives me one number, other tanks here smaller, are more gallons... I have been shopping for lights, i don't want lighting to limit what i can put in it, i plan a couple hunred lbs of LR, sps, mushrooms and zoes.. i never met a coral i didn't like.. Thanks in advance...john