i have had my tank running for a month and a half now... i am using penguin 350 biowheel, penguin 660 PH, and a Fisson nano skimmer for circ. and filtration. i have 35lb LR and 40 lb LS in my 20 H and i am wanting to know if removing my skimmer would be a good idea. this thing produces an insane amount of microbubbles and the water in the cup never has any coloration to it. i guess what i'm trying to ask is will the HOB filter, LR, and LS provide enuff filtration? BTW, do microbubbles cause algae?