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					Originally Posted by reef_raf  A 29g tank only needs about 25 pounds of rock. 58 pounds, you might need really skinny fish   | 
	
 yah... on my 80G, I got 85 lbs... I had to turf 3 or 4 pieces because they didn't fit right in the tank. ROT is about a pound per gallon, but even that dedends on how pourous the rock is... if it's volcanic, it's going to be lighter by volume ect.... so take that into consideration.