Exact Water Quantity

[n00b mariner]

How much will my tank hold exactly.....its a 36 x 15 x 15 with 30lbs of rock in it? Any one got photo`s of a similar sized tank???

[justgeorge]

you're not going to get an "exact quantity" because of the 30 lbs of LR. Depending on how dense or porous the rock is 30 lbs of rock will tank up an unknown amount of water.

[Andrew]

Thats going to be hard to figure out. I don't know who large and how dence your rock is.

[justgeorge]

But without the LR it holds approx 35 gallons.

[Big Amish]

36 x 15 x 15 = 8100 cubic inches

8100 x 0.00433 = 35.073 gallons

So you have a 35 gallon tank. The rock's weight, unfortunatly, can not be used to calculate how much water it displaces, because we do not know the density of the rock. However, there are some methods (http://www.aquariumfish.net/information/aquarium_arithmetic.htm#top2) you can use to calculate it.

[Paintbug]

are those inside or outside demensions? how thick is the glass? once you get the inside demensions, use this http://www.reefcentral.com/calc/vol.php to find the volume without the rock.

[n00b mariner]

Thanks guys.....big help:)