Delps8
Well-Known Member
The attached images are from one of four Gelato autos that are in day 23 (since germination). The leaves started showing signs of having an issue a few days ago. Only one plant is showing symptoms and only leaves that are being impacted are the lower leaves.
The grow environment is detailed in my grow journal here.
The plants went in the res on 10/02/21 and I did not swap out the res after a week, due to work schedule and due to the fact that it’s a 35 gallon//28 usable res and there were just 4 seedlings in the res. Air pumps were running for the two week period. Over that two week period, pH rose from 5.9 to 6.0, then to 5.9 and, yesterday, 5.8. Water temps are maintained at 68°.
VPD was 0.8-0.9 with ambient temps ranging from 76° to 82°. LST’s have been about -1° from ambient.
Nutes are Botanicaire Kind Expert and the EC was 0.4. I swapped the res today and the new EC is 0.8. I realize that’s a significant jump but I’m not seeing issues with any other plants and this issue existed prior to the change in the res.
As a precautionary measure, I swapped out 7 gallons of nutes. EC is 0.62, pH rose to 6.1 after the addition of 7 gallons of RO water. I added two doses of 1 ml each Down. The pH fell to 5.9 and, after the second dose, 5.7.
I’ve checked some of the visual "sick plant” charts and, so far, nothing seems to match the symptoms that I’m seeing.
The rest of the plant looks great as do the other plants in the res. Roots are lengthy, well developed, and white. The res had very little residue in it and still had that “fresh res” smell that we all know and love.
Seeking the wisdom of the group - what’s the diagnosis and what steps should be taken to resolve the issue?
The grow environment is detailed in my grow journal here.
The plants went in the res on 10/02/21 and I did not swap out the res after a week, due to work schedule and due to the fact that it’s a 35 gallon//28 usable res and there were just 4 seedlings in the res. Air pumps were running for the two week period. Over that two week period, pH rose from 5.9 to 6.0, then to 5.9 and, yesterday, 5.8. Water temps are maintained at 68°.
VPD was 0.8-0.9 with ambient temps ranging from 76° to 82°. LST’s have been about -1° from ambient.
Nutes are Botanicaire Kind Expert and the EC was 0.4. I swapped the res today and the new EC is 0.8. I realize that’s a significant jump but I’m not seeing issues with any other plants and this issue existed prior to the change in the res.
As a precautionary measure, I swapped out 7 gallons of nutes. EC is 0.62, pH rose to 6.1 after the addition of 7 gallons of RO water. I added two doses of 1 ml each Down. The pH fell to 5.9 and, after the second dose, 5.7.
I’ve checked some of the visual "sick plant” charts and, so far, nothing seems to match the symptoms that I’m seeing.
The rest of the plant looks great as do the other plants in the res. Roots are lengthy, well developed, and white. The res had very little residue in it and still had that “fresh res” smell that we all know and love.
Seeking the wisdom of the group - what’s the diagnosis and what steps should be taken to resolve the issue?