Originally Posted by melosu58
It`s hard to go by the pound system. Your different types of rock are different weights. A tank full of 200 lbs tonga rock might fill up a tank while 200 lbs of Fiji rock might on be 1/2 full. I have 200 lbs of rock from the Mediterranean and I have less than half. The thing about too much rock is that if you get a fish like a tang then it hampers their free swimming style. They need lots of space to swim.
I have to agree with this as I have 200+ pounds of rock and barely put a dent in my 90 . it's not always about how much there is . I have fairly heavy rock I also have good circulation in and out of the rocks ,
my very first tank I had was a 37g bow front
it looked as if I had tons of rock . it did but the rock was so light I about packed the tank with only 20 lbs of rock , this is what I consider jamb packed almost wall to wall rock , but I still managed to make it work