What I do
Water sits out 2 -3 days, but not PH’d or nothing added to it.
I use my Texas Vegetable Food all of veg and for Mothers, cuts
Run the veg food 1st two weeks into flower.
Start of week 3 flower I switch to the straight 10/30/20 Jacks. Runn it weeks 3/4
Start of week 5 i mix 50/50 Jacks 10 30 20 and the 5 12 26. Use it weeks 5/6/7
Start of week 8 till the harvest, straight 5 12 26.
I use NO MPK, no additives, no salts, mag, nor calcium. AGAIN, I use tap water.