Purple Kush Autos at Day 37 - Yellowing leaves

[Sgt Peppercorn]

HI
-first time auto grower, used to growing photos-

I have 3 PK autos all 37 days old growing in 3 gallon fabric pots. 40% amended soil from previous grow( bone meal and Epsom salt and d.lime and kelp ) , 30% compost and 30% perlite.
They each get a liter of water every three days that has sat out. I add cal/mag at half strength and make sure that the waters ph is at 6 - 6.3.
Did a soil test and the soil is at 6.8.
I have fed them once so far at week 4 when flowers started. 4.0.1 at half strength with some molasses, cal/mag at half strength. PPM 502. PH 6.2
At one liter of water per plant there is not much run off to measure.

Using 2 LED lights at 30 inches above the canopy. Temps with lights on 25 - 28 C. Temp with lights off 20 - 22 C.

The yellowing began just before the first feeding and just after they started to flower. I figure even though I was gentle doing the lst, I slowed her down a bit, but I can't figure out what the problem is. It looks like she's over fed but my experience is with photos only. I'm not a big fan of feeding weed. I just figure the soil should be the provider.

ANY help would be appreciated big time. We really need these girls to provide us with a little smoke while we wait for our photos to mature. If I have left out vital info let me know and I'll correct/edit

Thank You, Stay Safe

Peppercorn

 

[Waira]

-- pardon the delay Sarge',....
So it looks like longer term starvation, that soil simply isn't enough nor is it complete in nutritional profile,... She looks short on P, N, likely micro's too, a hidden bottleneck... best you can do is keep watching that in-pot pH and start feeding bloom nutes!