Question, are you using your calmag+ with your "dead" water
HI Hella. Why would you need calmag if you added dolomite lime to your soil? Man, I'm the worst guy to ask about seedlings after my recent luck, but then again, maybe I'm the best guy It's pretty embarassing having like 6 waves of germination attempts all poop out on me.
So I would say to you - forget any kind of watering schedule. It's all about the plants needs, not what you have worked out as the best watering timetable. So water only when they need it and if just one feels a tiny bit heavy, leave it. Hope it helps mate