Hello per the title. I have multiple tanks fed from one RO/DI unit. I had a solenoid valve on a timer that opened numerous times per day to replenish all the tanks with a float valve in each sump for level control. Problem is, yesterday the solenoid died and all the tanks sumps were way low. I want to put a solenoid valve after the RO/DI and just before the float valves on each tank. So if any fail, only one tank is at risk of low water. I cannot find info on if these electronic valves can contaminate the purified water. Tunze says to install theirs, before the RO unit, which concerns me. So before I go and potentially leach things into my reefs, does anyone know? Thanks