No, I mix right before I feed. The longest water has sat after being properly pH'ed was about an hour.
Did a VERY light feeding today and threw the girls in the new tent setup. Not really pleased with the suction I'm getting off the fan they gave me, the math works based on CFM and the volume of the tent, but it's not really "pulling" very hard through the charcoal filter.
Here was my feeding regimen, plus some pics:
08 July - PAK + IAF = GenOrganic 1/4 strength nutes, week 1 dose @ 6.5 pH. PJEM = GenOrg 1/4 strength week 6 @ 6.0pH. HydroPJEM = .5ml of 3 part mixture, 1/4 strength camg, 5.8pH.
Going to give everyone a few days to adjust to the new environment. Ventilation is good, I'm leaving the flap open at the top and the top access point is open like a chimney, so temps are rock solid and air flow is vigorous. I didn't try to buffer up or down too much with this feeding...I'm just hoping something "sticks" this week and the plants start to perk up. Contemplating a camg foliar feed to augment the routine, maybe in 3-4 days.
From left to right, the pictures are:
-PJEM in hydro
-Group shot of tent (both the blackstar 240 and sun systems 150hps are burning bright!)
-Another group with carbon filter in the background
-PJEM in

HF w/lime (and apparently a pH of like 8, *sigh*)
-IAF nr1 (the runt) in a 10" clay pot in Sunshine Mix #4 and IAF nr2 and nr3 in the background. All 3 of those girls popped on the same day, the runt is small because she was root bound in some seed starter for a few weeks.
-PAK nr1 (tall pheno)
-PAK nr2 (midget pheno)