Beesknees1
New member
Week 1 of flower, half the plants in coco the other half in Soiless/peat. All the plants look like the last three images. The First two images with the more severe damage is only a few leaves on a few plants.
Feeding Maxibloom. Ph going in for coco has been between 5.6 and 6. Ph for peat has been 6-6.4. ppms have been 600-800 range with last feeding closer to 1000. Just checked runoff. Coco 5.7/1150. Peat 5.9 1050.
Last two feeds I intentionally lowered the PH a little thinking this is a iron def but am unsure now.
Room runs 70-72 lights off and 73-75 lights on. Humidity is between 40-50.
Strains are Super goji Haze, Rockstar, G13. The super goji seems to be the most affected. I believe it has the most sativa in it and is defiantly the most stretchy of the three.
This started approximately a week ago. I had it happen a few weeks before that when the room accidentally got down to 57f during lights out but they seemed to turn around when the temps were corrected and I slightly dropped the Ph of my rez. The recent time when this happened also seemed to coincide with a heater issue and the room got equally cold for a night but they don't seem to be greening back up.
I hit them yesterday with a micro foliar. I have not been adding Calmag to rez, I wanted to try without since some have success with Maxi and no calmag in coco. Last feed however contained calmag. My tap water is 200 ppm. They still seem fairly healthy and growing/praying.
Looking in the "Complete guide to sick plants" forum post I see the other possibility it looks like is sulfur which is locked out a low PH in which case me lowering my PH would make the problem worse.
Alright any insight much appreciated
Cheers