Okay, I decided to thread this question. Why is it suggested to have 1-2 lbs of LR per gallon?
The reason I ask is:
180 lbs of LR, depending on kind, could seriously cut down on space in my or anyone's aquarium. The lighter rocks, like Fiji, would nearly fill up my 90 gallon tank. Heavier ones like Pacific shelf or Vanuatu, would barely fill 1/3 of the tank.
What really confuses me is the the more porous, lighter rocks, will have much, much more surface area for biological growth than would the heavier, less porous rocks since they would have less surface area. So I have to ask why, would it not be suggests to double the amount of the less porous rocks to make up that surface area? OR lessen the quantity of the lighter rocks? Maybe suggest a volume and not a weight? Harder to quantify I know.
I know folks are placing quantities of LR in sumps to leave the DT more open. Still, I have 55 lbs in my 90 gallon tank and am wondering where the rest is going to go!
The reason I ask is:
180 lbs of LR, depending on kind, could seriously cut down on space in my or anyone's aquarium. The lighter rocks, like Fiji, would nearly fill up my 90 gallon tank. Heavier ones like Pacific shelf or Vanuatu, would barely fill 1/3 of the tank.
What really confuses me is the the more porous, lighter rocks, will have much, much more surface area for biological growth than would the heavier, less porous rocks since they would have less surface area. So I have to ask why, would it not be suggests to double the amount of the less porous rocks to make up that surface area? OR lessen the quantity of the lighter rocks? Maybe suggest a volume and not a weight? Harder to quantify I know.
I know folks are placing quantities of LR in sumps to leave the DT more open. Still, I have 55 lbs in my 90 gallon tank and am wondering where the rest is going to go!