ok i see now your goin to have those problems witht that setup, you can always ditch the bio balls go with live rock rubble and run the pipe all the way in like mine, also with the skimmer there you prob wont get rid of all MB, if you have the room you can always buy a cheap used tank off craigslist and build a fuge, mine is a 29g only mods i hav added was eggcrate on the last short baffle to keep cheato out my pump area.