Tank Volume with Rock and Sand

[skim]

I found this a while ago and thought it may be of some help for people when trying to figure out Dosing and other things like Skimmer size and what ever else. Don't forget to use inside Dim. of your Tank and Sump makes quite the difference.

http://reef.diesyst.com/volcalc/volcalc.html

 

[dbl]

It is indeed a great tool.