Here's my mix, similar to Coots mix. Credit to @RastaRoy from RIU for the help and advice. I've been using this for all stages of growth without cooking, and have seen zero issues so far. I'm in a rental so I can't do notill beds, but this recipe can be used in pots, beds, and SIPs containers.
Base Mix - 1:1:1 ratio
- Fluffed peat moss
- Mix of good quality compost & earthworm castings (ewc)
- Rice hulls or other aeration
Minerals - 1.25 cup per cuft of base
- Rock dust
- Oyster Shell Flour (ONLY added if tapwater pH is 7.0 or below)
Food - 1/2 cup per cuft of base
- Fish bone meal
- Kelp or alfalfa meal
- Malted barley, powdered or milled fine
- Neem seed meal
- Crustacean Meal (ONLY added if tapwater pH is 7.0 or below)
Additive - 3 tbsp per cuft of base
Fertilizer - None. Tapwater only. Teas not required.
Topdress at flip with 1TBSP each of kelp or alfalfa meal and neem seed meal per gallon of soil, plus 1" ewc on top of that. Can put a mulch layer of rice hulls on top of that if required.
Reamend in these amounts per cuft of reclaimed soil after each flower run
- 4cups peat
- 10cups compost & ewc
- Oyster shell flour, crustacean meal, fish bone meal, neem seed meal, kelp/alfalfa, barley in original quantities
- Gypsum 1/2 cup
- Langbeinite 1TBSP
- Rice hulls or aeration as necessary, typically every other cycle.
The only other things I do are minor dustings of azos + mykos at planting and each transplant, and a small handful of mosquito bits on top and in the drip pan to control gnats.
I sought Rasta Roy's help (he owns a soil company) after experiencing supersoil issues due to very high pH tapwater (8.0-9.0). I don't add the oyster shell flour or the crustacean meal to this new KISS mix. Our water has chlorine, not chloramine. I'd filter chloramines out, but the chlorine in mine doesn't hurt the rhizosphere microbes at all.
After three full runs with this, tapwater only, I've seen great growth, green throughout with a good fade on the heavy eaters. With yielders, I've gotten about an oz of manicured bud per gallon of soil +/- a few grams. Great flavor - more terps than when I used more complex supersoils with all the guanos and compost + ewc teas. Rasta Roy helped me realize those are almost completely unnecessary. He also suggested alfalfa instead of kelp, and no addition of rock dusts after the initial one.