Micronutrients are different than microbes, but you want both with organics. The beauty of EWC is it has both. So does the soil you're using. So if you have extra soil I'd add that now to start.
If you want to use distilled and salts I'd just get some extra micronutrients in salt or Hydro form. But it sounds like you're not trying to go that route. I don't know.
I would've given it a top dressing a couple weeks ago or so but you still could now. That soil needed a supplement awhile ago, especially since you've been using distilled. You have fish and kelp coming now so you could use that too for now, but I'd also get another dry mix too. I'm lazy so I don't like to have to do much more than add water.
You still haven't answered the question about the 3.9 pH thing. And are you adjusting the pH with anything?
