k im new at this..but can you give me the lowdown on the air injector type skimmer....i have a red sea skimmer that pumps air in befor the pump...and it suck.....i also have a skimmer in my sump that is about 2 feet tall by 5 inches and uses a pump that gose into a tube that has a hole with a hose on top..that one make some blackish junk but not much... i want a better skimmer but i dont know what im getting in to...any help would be great....thz...
rich hancock