I'm throwing around the idea of upgrading the tank I have from a 38 to a 75. Currently all I have is a canister which I run floss, chemi pure blue, GFO mixed with rox carbon (I know redundant) there is 3 koralia power heads that are 425 gph I believe. There is 40lbs of live sand 45lbs of live rock. Now if I upgrade to th 75 I still want to stay skimmer less and sumpless because it's at work and don't want all that extra equipment running (more stuff to go wrong) it's FOWLR. So my question is who runs a system around this size with minimum equipment? I'm keeping the stocking list low. Who thinks I'm heading for disaster and who thinks it'll be ok?