Pre mix KNF solution
Hi, it is possible to pre mix OHN, FPJ, BRV and LABS? How long will it keep (room temp or refrigerator)?
Top answer
u would not want to pre mix LAB or FAA but the base mix/maintenance spray can be pre mixed OHN FPJ BRV WCAP then added/used at 25ML/gal as the base for the sprays
From the KNF library
From the KNF library
Drafted by Claude from Office Hours and the books
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Sep 2026
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5 sources
Drake recommends premixing the maintenance solution: food, cleanser, medicine, and structure. It keeps for about a month. (Office Hours Ep. 23, 35:49)
FPJ is the food and OHN is the medicine. (Cho's Solutions, p. 1) BRV is the cleanser. (Pure KNF Manual, p. 31)
LAB is different. Drake calls LAB the protectors, and adds them fresh right before use. (Office Hours Ep. 23, 35:49) Lactic acid bacteria are the protectors. (Office Hours Ep. 79, 44:26)
Fuel (FAA) is also mixed fresh. One episode says don't store big batches of food and fuel together. Mix each solution fresh as you use it. (Office Hours Ep. 88, 32:22)
The library does not say whether the premix keeps better at room temperature or in the refrigerator.
Sources
- 32:22 Office Hours Ep. 88 (Aug 2023) — IMO Drone Army for Fire Prevention, FPJ Alcohol Smell, Biochar · “You can, but don't store big batches together; mix each solution fresh as you use it.”
- 35:49 Office Hours Ep. 23 (Mar 2022) — IMO4 Pig Feed, LAB Without Milk, Disgustingly Cheap Microbes · “premix maintenance solution of food, cleanser, medicine, and structure for about a month, but add Protectors fresh right before use.”
- 44:26 Office Hours Ep. 79 (Jun 2023) — Seawater Dilution Ratios, Restaurant Waste for Pigs, Powdery Mildew · “Spray protectors (lactic acid bacteria) early and often”
- p. 31 Pure KNF Manual · “5.PureCleanser (BRV) Brown Rice Vinegar Cleanser.”
- p. 1 Cho's Solutions · “(FPJ) Fermented Plant Juice Food.”
