Im a longtime DSB user and advocate and agree that a 24 is probably too small for a properly functioning DSB. The smallest tank Ive been succesful keeping w/ a DSB is a 40 breeder that has been running for several years now but its a relativly low bioload tank(softies, zos, lps, carpet anenome, pair of Clarks clowns). BTW I dont really do any DSB maitnence other than add more sand over time as it disolves. I leave maitenence to cucumbers, crabs, snails, etc..

-ERIk