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Yellow/brown leaves
GrowingGrannieanswered grow question 2 years ago
My gut is telling me you went the other way in your feed - that you didn't give them enough... BUT - I AM seeing a bit of a problem with calcium which COULD be caused by overfeeding the grow nutes (excess nitrogen can cause a lockout)... This is tough to say since it's a question of "I might have..." - so what I'd suggest is to add some calmag to your next feed and see if this doesn't stop the problem (and btw, calmag should only be added once a week if you want to continue with it) - the yellow leaves are not going to get greener or improve in any way so don't expect that but further yellowing shouldn't happen a LOT... you might see a LITTLE residual effect. If this DOESN'T solve the problem, then go ahead and flush them out adding in 1/2 strength nutes at the very end of the flush. Your pH is spot on so that's not causing the calcium problems...
Good luck!
TheeLemonanswered grow question 2 years ago
Also, I have allowed to the temperature to hit 40°, as I've started using a CO2 bag. It's been at those temps for around 2 weeks. I would have thought the plant would have reacted sooner, if the temps are the issue.
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TheeLemonanswered grow question 2 years ago
I'm due to water/feed today, but I'm waiting on an answer before I do. Don't wanna give nutrients if it's had too much, and vice versa.
There was no yellow leaves 3 days ago, and I've fed her nutrients then too. Tho I did lose count whilst mixing the nutrients so it's possible I gave slightly too much, but we're talking a max of 2/3ml per liter too much. Nothing drastic.
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