no sump by the sound of it....also no skimmer i run a skimmer you can get hob ones that work good. i had some slim alage problem when i first set that up but my macro beat it out as well as skimming. to remove disovled "stuff" in the water. also if you don't have light needing corals kill the lights the fish can live with out light but the alage can't. and as everybody says water change water change water change....and you might want to kick up your sand bed when you do to get anything trapped in there out. also a good clean up crew helps a lot. i have 20 hermits 20 snails and already about to get more.
90g mixed reef, 12g nano, 3 dogs, 3 cats, 2 ferrets.
Driving the wife crazy.......PRICELESS.