Looking to buy a pico out maybe build one (even though I have no experience.) I'm thinking either: jbj 3 gallon pico 6 gallon bio cube 5 gallon standard (maybe remove the rim trim with some baffles?) 2.5 gallon standard I have some aqua clear filter laying around that I could turn into a fuge. How hard would it be to drill/overflow box a tiny tank and add a tiny sump? How much would a sump modification add to the whole project? Does anyone have any suggestions on best size or setup?