The rule of thumb is 1 to 1.5lbs per gallon. The type of rock and the quality will determine how much space it will take up. With good quality rock you can go on the less side. Hope this helps.
Fish
Originally posted by Maestro:
<STRONG>how much live rock can i put in a 27g tank an stillhave room for corals to grow? and in a year i was thinking of getting a manderin and yes i know their hard to take care of
thanks for the help
[ May 17, 2001: Message edited by: Maestro ]</STRONG>