Ok guys i need some advice here. I currently have a kw reactor and a tunze ato. I was originally going to do two pumps in the reservoir one for the reactor and one for the ato. My challenge is if the pump for the reactor turns on, water will rise and may cause the tunze alarm to go off. Should i just use one pump and mix the kalk in the reservoir? I dont want to have ph swings either. I havent hooked up the kw reactor. The ato is already hooked up. Any advice would help here. Thanks.