So My original plan was to dose kalk in ato and run a calcium reactor . but the calcium reactor I got leaks and doesn't offer much control ( noob purchase ) so now since my alk and calcium are all over the place , though I am manually dosing some liquid calcium and supperbuffer for now till the levels are correct . I want to automate this process as cheaply as possible with the possible addition of a calc reactor later . I feel I have at least some understanding of how this all works but now just to be sure I am looking for some advice / tips on ways to do this that won't cost me an arm and a leg and still be effective at maintaining stability . I don't have a problem with some manual additions but I think that this is a bit too sporatic and my levels will rise and fall too much daily . system info ,..... 90 gallon display with about 130 Lbs live rock , 30 gallon sump/fuge running roughly 20 gallons full . reef octopus skimmer ( don't know model ) RKL controlling temp only so far . I want to eventually set that up to run PH . thanks in advance and hope you can help