hello parrotchute , i have one maxjet 1200 with a upgrade kit about 2400gph on the back wall mj1200 along the front canster filter about 220gph. i use only RO water from my reef store,put a new kind of polishing pad in the canster about 2 weeks ago just noticed a bad smell on my arm when i take it out of the water .what do you thing about that.