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I think it's a mag deficiency.I've already added a good dose of cal-mag in the last irrigation,tomorrow I've to irrigate again and I wanted to know your opinion,I would exclude pH as I'm measuring at each irrigation.The new leaves are healthy and the plant grows well IMO.THX GUYS
Are you measuring runoff ph? runoff ph will tell you if you need to adjust your feed ph up or down in order to get it to the proper range (6.5-6.8 soil)(6.1-6.3 soilless). If your ph is good, and you are using cal-mag 1tsp per gallon, you should see some improvement. Happy growing.
hi friend @smoke24 , thanks for your reply. Yes I measured the runoff ph and it is 6.5 so I think it's ok, I await other answers. If I don't receive any other answers by the evening, I will select yours as the best. thanks 😇