I just finished aquascaping my 20 gallon high dwarf octo tank! I am very excited. It is completely ready, except for a skimmer (and octo-proofing it). I still need to get a skimmer, but I have a few cheapo ones bought for my 75 gallon that would work until I decide if I wanna get a new one. I think I did everything right. RO/DI water, lots of hiding places, medium flow, high filtration, small amount of live rock, ~1 inch sand, macros, etc. I'm making this a natural setup. I want a dwarf octo to get my feet wet in cephalopods, even though the common problems with dwarfs, short life span, nocturnal, etc. Since it is a dwarf, do I need to cover the intake tubes on filters and powerheads with something? Do dwarfs take to frozen with the same success rate as bimacs? BTW, this tank has been cycling for about 5 months now, and the pods population has exploded. I added some hermits for clean up, but they won't be around much longer... Pics to come when the water has cleared!