I run a large amount, 1/2 gallon, of Rox-8 carbon when ever I think I have discolored water or I suspect pollutants. usually for 30 days then remove. typical twice a year maybe three times. don't believe it has caused any issues. its palletized and has no dust rinses clean in one pass of RODI. Thats been my choice. The tank react positively in a few hours or not at all.