If been dosing kalk with a kalk stirrer at night to help with my ph. I'm using a versa and a 1 gallon jug and I'm dosing 850 mls a day. My question is can I put a T in my ATO line to feed to my kalk stirrer instead of using a 1 gallon jug. I'm using a brs 50ml dosing pump for ATO and my ATO reservoir is about 25 ft away from my tank. I was thinking about putting a T in my ATO feed line and then putting a check valve then a line to the versa that feeds the stirrer. Not sure though when ATO turn if it will try to pull water from the line that would feed the stirrer and the line that goes to my reservoir at the same time or if by putting a check valve there it would stop it from doing that.