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I need some help I have a 72Bow with built in surface skimmer/filter attached to wet dry w/ bio Balls size 150 gal. w/ in sump protein skim 600gph Tank up and running for 2 mo 65 lbs LR/sand. Chemistry as follows sp grav. 1.024 Alk N PH8.2 Amonia 0 Nitrite 0 Nitrate 10 Last week I noticed what i...