feeding them MC now while you wait for the new stuff to sort itself out might be the best way to go.
I nearly said something similar myself earlier but I don’t know anything about MC really, so held back.
I have looked up your stuff tho so here’s what I think...
mixed it in with my promix for the bottom 1/3 and then just regular promix to fill it up. I still need to read up to be sure, but then you can top dress or tea as needed
okay, in my view you’re blending their 3 different methods. I’ll try to explain what I mean (and maybe I’ve missed some of what you did so...) Their instructions that read;
Super Soil Technique:
1. For containers 5 gallons or greater use 3.2 ounces of concentrate per gallon of container
2. Fill a container 1/3 full with the concentrate and potting soil and mix thoroughly.
3. Fill the remaining 2/3 of the container with base potting soil only
4. Plant and water from seed to harvest
Living Soil Technique:
1. Thoroughly mix 1 lb of Nature's Living Soil concentrate for every 5 gallons of organic potting soil to make a ready to use Living Soil
2. Make a small hole, about the size of a 16oz cup, and fill with organic potting soil.
3. Plant and water from seed to harvest
Top Feeding:
1. Sprinkle a thin layer of Nature's Living Soil concentrate on the top of the soil and water.
Both of those ways of doing it refer to working with some kind of base organic
potting soil and by that they mean like a ‘fox farm’ or ‘happy frog’ or something like that. Not an inert base with no organic content built in. From the top of the page.
Our concentrates for super soil/living soil are to be mixed with organic potting media such as Roots Organics, Fox Farm (Ocean Forest & Happy Frog are very popular with our customers) or Dr. Earth which is available at Home Depot and other box stores.
Also, you seem to have mixed and built it like the first version (supersoil) but are thinking to use it like the second. (Which won’t matter anyway if there’s meant to be an organic potting soil there from the start and there isn’t one). So you’ve built it perfectly for the supersoil approach but using the wrong substrate - should have been an organic potting soil.
what you really need to do if working with the promix is what’s at the bottom of that page, as below (your promix is already the peat/coir and the perlite)
Making your own potting soil:
Ingredients:
6 gallons sphagnum peat moss or coir fiber (preferred)
4.5 gallons perlite
6 gallons compost or earthworm castings (preferred)
1 pound Nature’s Living Soil Concentrate
Mix the ingredients thoroughly
Do you have worm castings mixed in? I didn’t see.
You’d maybe want to add some perlite. I think promix is only 27% perlite and that mix seems higher.
They don’t mention letting it cook, not there anyway but maybe they do elsewhere. Most living soil folks would say at least a week and more is better. But I don’t know anything about their concentrate so it may well not need it at all.
Considering the situation you’re in, i would say use the highest recommended dose for top dressing used soil (they mention that somewhere too). And water that in with a tea - or however they instruct.
Or contact them and explain your situation and seek their advice about getting these ones through.