Hello all, I have had my reef tank for eleven years, I have a 90 gallon, with a 15 gallon sump, I picked up a Avast marine kalk stirrer to start dosing Kalkwasser.. My ro system is a reef and home drinking water system, It is hooked up to a 15 gallon bladder type tank that feeds a solenoid to my ato. Alot of what I have been reading lately, is ro di should not be hooked up to a bladder tank because of tds creep. My tds has always been zero to 7, that's when I change the filters. Should I leave it hooked up that way.