i've got a 30gal FOWLR w/ 4 occupants. lately i've noticed a large amount of waste in the bio-bail and the last few days have resulted in cloudy water. last water change was 1 week ago (25%) & the protein skimmer has been dumped regularly. only about 50% of the blue bio-bail is visible, the remainder is brown. i've also got an outbreak of algae (hair & slime) which is probably a result of over feeding & lack of clean up crew...my horseshoe crab trapped himself between a rock & glass overnight & perished. am I correct in what i believe to be the cause of my problems? any help is appreciated.