Hi here is a tank calculater so you know how much your tank hlds. Twiggy
http://reef.diesyst.com/volcalc/volcalc.html
Stevesfish
02-27-2008, 09:54 PM
I use this one twig its calculated in english gallons and really easy to use
Calculating Pond Sizes. (http://www.aquatics-warehouse.co.uk/extras/Info/Size_of_UV_filter.html)