the sand will be pretty easy to figure out and should be rather consistent from tank to tank. The LR
, however, will very greatly depending on the type of rock, FL aquacultered, to tonga and even from piece to piece. The easiest way to tell how much your LR
is taking up is to measure the amount of change in water level in your tank when you add the LR
How to determine density Sand
1)Take a graduated container with a known volume of water (a large glass pyrex measuring cup with 2 cups of water would work well)
2)Weigh out a known amount of dry sand, say 8 ounces (1/2 pound).
3)Add that sand to the measuring cup and note the rise in water volume.
4)Your density is then 8 ounces per (the change in the level of the measuring cup)
NOTE: 16 ounces = 1 pound and 16 cups = 1 gallon.
Example: If 8 ounces took up 1 cup (just speculating) then the density of dry sand would be 8 pounds per gallon. so a 50 pound bag of sand would then take up 6.25 gallons of volume. So as soon as someone has the opportunity to apply this to some dry sand you'll have your answer for the sand