I just ordered a calcium reactor and it says it has a place to put the ph probe. however the reactor is going to be in the next room and my ph probe from my acjr isn't going to be long enough to reach to the reactor. i can buy an extension but would rather not. is it just as good to have the probe in the effluent from the reactor where it dumps into the sump? how does everyone have theirs hooked up? thanks.