How do you figure out how many gallons a tank is?

[pennyguy23]

Just as heading states. I forget to figure that out. Can any one help. Thankls

 

[Dubbin1]

http://www.reefcentral.com/calc/vol.php

 

[pennyguy23]

Thanks Dubbin.
I like what I'm seein. San Antonio losing 2 in a row. Good Stuff.

 

[jdieck]

You may also try this one.
http://home.comcast.net/~jdieck1/volcalc.html

 

[Dubbin1]

<a href=showthread.php?s=&postid=6768370#post6768370 target=_blank>Originally posted</a> by pennyguy23

I like what I'm seein. San Antonio losing 2 in a row. Good Stuff.

I hear that

 

[Silencer]

For reference (to use when you're at a LFS or not on the internet), the formula is...

(Length * Width * Height [all in inches]) / 231

 

[WaterKeeper]

Or get a whole bunch of measuring cups and fill as many as the tank contains. There are 16 cups in a gallon.-

 

[sequential]

How good is the calculator's, linked above, estimation of LR + substrate volume? I find it hard to believe LR + substrate = 100 lbs translates into 4.2 gallons, but that might just be a failure of my imagination.

 

[jdieck]

<a href=showthread.php?s=&postid=6770932#post6770932 target=_blank>Originally posted</a> by sequential
How good is the calculator's, linked above, estimation of LR + substrate volume? I find it hard to believe LR + substrate = 100 lbs translates into 4.2 gallons, but that might just be a failure of my imagination.

The calculator calculate the volume taken by the solid rock and that the pores are going to be filled with water which is accounted as part of the system volume.
The calculated volume for the rock is the rather small volume in solid rock but it takes a lot more volume of empty space which becomes filled with water accounted for. Note it calculates the system water volume including the water iside the pores.
In other words the calculated water volume will be the volume of water you will have to add if your rock and sand were dry when first introduced.