2 in a 10 or 15 should be okay, not much chance of a healthy anemone in a tank that size, but with good circulation/ aeration and filtration (my preference is biological only cuz its prettier and the only maintenance is h2o changes and algae removal, you'll probably get hair algae w/o a skimmer or mech filt but if the fish are your main deal that's not gonna hurt 'em--by bio I mean live rock) they'll do fine and shouldn't harass each other. I wouldn't do more than two percs in a small tank cuz as they grow they won't get along, but if you want to put more than 2 fish in there (which you probably will after the shiny newness of the percs wears off, give it about 2 mos.) I'd get as big as your parents will let you, put as much LR as you can afford, let it cycle for a month and watch the creepy crawlies populate, add the percs, give it another month or two to let them acclimate and establish territory, then add some other critters/fish. If you're crazy for an anemone then you'll need lots of light to get the kind the percs may (or may not) take to, bubble tip. If not you can toss in some other kinds of inverts that don't give a rip about light intensity, like an urchin or a choco chip star (not reef safe but if you're not going that route you'll need SOMEthing interesting to look at). Set whatever lights you have on a timer so the fish know when to wake up and to grow whatever kind of algae the lights will support for nutrient export (a part of bio filt). Okay I think I've rambled on enough now and answered enough questions you didn't even ask. Hope this is more helpful than gibberish! :wink: