i'm still really unsure of what to do. if i do go with a sump, i have a couple options there. i have two 10G all-glass lying around, and could use just one, or i could drill those as well and put them side by side to have 20G of sump/fuge. i could also go get a 15 gallon or something, but that wouldn't fit as nicely under my cube. and do i really need to go with a MH? it's either that or a coralife aqualight pc wth 96W. could i add more and more pc to crank up the wattage? is the difference between 150W of PC light and 150W of MH light that noticeable/worth it?