This is my 20 gallon nano cube. I have had it set up for a little over a month. im using the eshopps nano skimmer, cobalt heater, hydor wavemaker. My livestock includes 2 wyoming white clowns, a 2 spot gobie paired with pistol shrimp, 5 zoas. candycane, GSP, torch, hammer, octospawn, acans and favia.