I think I’m losing this girl, it looks worse under the burple lights, I’m seeing lots of yellowing, 12 weeks of flower, 3 gal pot, been treating it as a mag def, but nothing seems to help. Using gh nutes at 100%. Feed, feed, water. Ph 6.7. Ppm in 900, out. 6.5. Ppm 900-1100, soil getting real hard, ordered sum yucca, also have a new light on the way, hortoculture 600 h, currently there is a vilision 1200w over it,
I think you might be building up salts as your runoff PPM’s are higher than inputs. Tips are burning also. Might want to back off nut strength a bit or do a complete flush with water as you may be locking out. You pH’s are good so maybe the Epsom salts may help with the yellowing, but again that could be nute lockout. Just make sure you pH everything before it goes in.
Given your soil is really hard suggesting salt buildup, I would do a flush with water 2x your pot size. Measure runoff at end and then refeeds with fresh nutes(w/cal/mg) (runoff+new nutes= 900-1000PPM.)
Ok, got thx, these are my flower nutes at 100% per the chart. 10 mil Bloom 2-4-4, 2.5 mil biobud .5-0-1, 5 mil cal mag 1-0-0, 10 mil bio marine 2-3-1, , do you see anything lacking or excessive in this ? Feed, feed water , 11 days in flower, the other 3 plants are doing fine on this schedule,
The soil continues to contribute to the nutes so yes you have to subtract what they are contributing from your feed so you dont overdose. Over time the soil will absorb nutes from the feed as well, so you have to take this into consideration also. I use GH so I am unfamiliar with your nutes. Use your nutes to control the pH in the soil by pHing to 6.5. Water alone cannot be utilized for controlling soil PH since it does not contain any buffers.