BFS
- Posts
- 5
- Reactions
- 2
- Joined
- Aug 10, 2017
- Points
- 3
I think this is Magnesium Deficiency, but the other three stains/plant look good
This photo is from a plant just topped. I have been starting to see interveinal yellowing and rust spots for the last week. I am also seeing a little deformity in the leaf tips. The other 3 strains in the tent look good.
I watched a video where Harley Smith said too high of humidity slow transpiration and slows Calcium uptake. Maybe my attempt to keep VPD from getting to high is the cause.
Thank you in advance for your attention and help.
This photo is from a plant just topped. I have been starting to see interveinal yellowing and rust spots for the last week. I am also seeing a little deformity in the leaf tips. The other 3 strains in the tent look good.
- grown from seed
- 22 days old
- Was 6" tall before toping
- ebb and flow - Greentrees Hydroponics Multi Flow
- I was using A/N PH perfect until 6 days ago I did a reservoir change. At that time I switched to Megacrop. It was a previously opened bag of Megacrop.
- PH has been slowly rising from 5.8 to 6.0
- Water was R/O with a PPM of 25
- nutrient solution for the last 6 days has been slowly lowing from 634 originally to 618 now
- no foliar feeding
- Light has been 315 CMH
- Light has been about 26 inches above pots
- Growing at on end of 4x8 tent
- lights on Temp 70, humidity 68 (trying to keep a good VPD)
- lights off drops to 63 degrees and humidity goes to 45%
- No insects seen
I watched a video where Harley Smith said too high of humidity slow transpiration and slows Calcium uptake. Maybe my attempt to keep VPD from getting to high is the cause.
Thank you in advance for your attention and help.