Hi, I've got some curiosities about the limits of kalkwasser. Currently I'm dosing a cocktail of 45ml vinegar/3 spoons kalk/1 gal RO water. Only when lights are off. Previously I simply dumped 2 spoons of kalk in my 5 gal bucket of ATO water. So now I'm keeping a personal record high of corals in my tank and finally my coral consumption is high, my ALK is stuck at 7, ph 8.25-8.45, Calcium down to 400 and this is the first time my calcium is actually dropping even with the dosing of kalkwasser. I want to push my kalk to it's very limits before I begin to dose 2 part or any other method than what I'm doing now so I got to wondering, how much kalkwasser's too much? I was thinking what if; A. I stopped super saturating my controlled dosing of kalkwasser so basically back to 2 spoon/gal & no vinegar but in addition put the vinegar in the ATO along with 2 spoons kalk/5gal of ATO water, can this yield any adverse side effects? I can not simply add kalk to the ATO without vinegar by the way because my PH can max out at 8.5 when the lights are on. B. Switch from 1 gal dosing container of super saturated kalkwasser to 2 or 5 gal and increase the current dose. Which would you go with or neither and why?