without skimmer ur fishes probably wouldnt survive for long unless u faithfully do water change everyday..
get those cheapo hangon skimmers if you want.. saw aquastar selling quite a few..
as for anemone, i dont think it'll ever survive in that small tank of yours...
even with a skimmer, i believe it will still perish because of the temperature and lack of strong lights..
i've got bad experience when i just started out in the past, and i believe without chiller, strong lights and a stable tank,
one shouldnt be keeping anemones... just for the sake of hosting clowns...
my 2 cents..