Sorry bro, I fell asleep. Those are all great questions, and perhaps someone can answer better than me. But I’ll give you the best explanation I can. Dolomite lime is ph neutral, around 7 I’m pretty sure. So it technically can be used to raise or lower ph, based on wherever it is. Think of it more as a stabilizer or buffer than an adjustment tool.
Now I was tired, and perhaps peat would’ve been a good suggestion to actually lower the ph. But my understanding is that those soilless mixes already contain peat? That was my thinking anyway, perhaps I should’ve asked before suggesting otherwise. Anyways… it’s also my understanding that the dolomite lime contains calcium and magnesium, something that most media doesn’t. And that when the mineral content in pots gets out of balance, this why we see some of the big ph swings. Something to do with the reaction of the hydrogenated molecules with the non hydrogenated molecules I guess.
My thinking by recommending the lime is that you need to get back to within at least a manageable range, and the lime should help do that. From there, you can water and feed with a ph low solution. But that was really based on getting it to react with ph low water in the first place. My concern is that whatever is going on in your mix will just continue to happen. You’ll water low and bring it down, and then it will climb back up. Without some sort of other interaction, I don’t know if it will get any better with just ph’d solution.
Perhaps @bob31 @Donaldj or @Countryboyjvd1971 can weigh in or recommend a more solid solution to help fix your issue.