Cinco
Well-Known Member
Well, it’s my first grow, and I have 2 of 3 plants showing what looks to me to be a potassium issue. However despite having been a member here for 12 years (holy shit) this is my first post and and grow. Pics, and then grow info below:
How it began, small spots on old growth
![199957F9-2E05-4535-8174-341D5E8C3710.jpeg](/data/attachments/3691/3691949-e4f315316be5c383e7aab55c18602a0a.jpg)
The worst of it, on the biggest plant.
![78EC3E59-D2D8-40B9-8CAE-C9A8F85D07C3.jpeg](/data/attachments/3691/3691946-41befdacdbe4d678609a37ec5e929dfc.jpg)
The autoflower
![76C45D12-5928-4ADB-BD14-BFD84C014917.jpeg](/data/attachments/3691/3691950-ab1890de1030fbaf04a7202a65c5ebf3.jpg)
I notice reddish stems? On affected fan leaves
![A19F02DA-1003-4EC3-8157-BA800E951281.jpeg](/data/attachments/3691/3691944-62fdf73485fa1eff248669f600719a64.jpg)
Details:
2x bag seed photoperiod, 6 weeks into veg and about to be up-potted to 5gal and put to flower
1x white widow autoflower, 2.5 weeks from seed
All in 3 gallon pots with 70% coco coir 30% hydroton. Coir was rinsed to tap EC and then buffered with a calmag solution twice, and rinsed again. Fertigated by hand 2x daily to 30% or more runoff.
All plants getting 2ml/gal (half strength) GH CALiMAGic and FloraNova Grow. Bigger girls to 1.7 EC (0.3 water, 0.2 Cal/Mag, 1.2 FN Grow). Smaller girl is same, diluted to quarter and as a week ago half strength.
I usually pH to 5.6-5.7. I am wondering if I should sweep up. EC and pH are being read with a Bluelabs combo meter.
This showed up on both girls as of about a week ago, starting on the lowest true (three finger) leaves. Now has spread a bit Upward. I have dropped EC gradually to 1.4 but sure would like some eyes on this and help. What should my next steps be?
How it began, small spots on old growth
![199957F9-2E05-4535-8174-341D5E8C3710.jpeg](/data/attachments/3691/3691949-e4f315316be5c383e7aab55c18602a0a.jpg)
The worst of it, on the biggest plant.
![E0CE4B42-92B2-47F7-A89C-417961E76A0C.jpeg](/data/attachments/3691/3691943-0f326bd9674d288220d0ebdcc8186094.jpg)
![4AACE623-8878-4D20-B4C8-19BD60FF0A6C.jpeg](/data/attachments/3691/3691942-4259e501dc508ed85bf9eb4478fd6b02.jpg)
![78EC3E59-D2D8-40B9-8CAE-C9A8F85D07C3.jpeg](/data/attachments/3691/3691946-41befdacdbe4d678609a37ec5e929dfc.jpg)
The autoflower
![76C45D12-5928-4ADB-BD14-BFD84C014917.jpeg](/data/attachments/3691/3691950-ab1890de1030fbaf04a7202a65c5ebf3.jpg)
I notice reddish stems? On affected fan leaves
![A19F02DA-1003-4EC3-8157-BA800E951281.jpeg](/data/attachments/3691/3691944-62fdf73485fa1eff248669f600719a64.jpg)
Details:
2x bag seed photoperiod, 6 weeks into veg and about to be up-potted to 5gal and put to flower
1x white widow autoflower, 2.5 weeks from seed
All in 3 gallon pots with 70% coco coir 30% hydroton. Coir was rinsed to tap EC and then buffered with a calmag solution twice, and rinsed again. Fertigated by hand 2x daily to 30% or more runoff.
All plants getting 2ml/gal (half strength) GH CALiMAGic and FloraNova Grow. Bigger girls to 1.7 EC (0.3 water, 0.2 Cal/Mag, 1.2 FN Grow). Smaller girl is same, diluted to quarter and as a week ago half strength.
I usually pH to 5.6-5.7. I am wondering if I should sweep up. EC and pH are being read with a Bluelabs combo meter.
This showed up on both girls as of about a week ago, starting on the lowest true (three finger) leaves. Now has spread a bit Upward. I have dropped EC gradually to 1.4 but sure would like some eyes on this and help. What should my next steps be?
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