DSB Substrate
 

I am thinking of running a remote DSB on my new system, what kind of sand is best for this application. A standard 20 gallon will house the DSB, I was thinking about 8"+, prob about 40lbs I guess. I am kind of a newb when it comes to DSB as I have always run shallow sand beds and my new tank is BB.

TIA

for 8"+ im thinking you going to need at least 60lbs, i have 30 lbs in my 20g and its barely 3". heres a link that show a few different ways of setting up a DSB http://www.wetwebmedia.com/deepsandbeds.htm
Hope this helps.