LR space

[2000r]

Can someone tell me if i have a 150 gallon of 72"X27"X18" and i put in 200lbs of Totoka, how many gallons of water will i need to put in?
200lbs of totoka seems to take many space...

[shifty51008]

I use totoka rock and love it but it is much lighter than most other types of rock. I ordered 100lbs for my 75 gal. and only used around 50lbs in the DT and put the rest in my sump.

as for how much water you need, there is no real way to figure that out. just start the tank a little more than half full, add your rock and finish filling with water.