sudden leaf browning during last weeks of flowering

[verucasalt]

indoor grow in soil (happy frog) under 600w led using fox farm nutrient trio 1st time grower and had nothing like this until 2 weeks ago. now all the leaves are brown and curling up. it seems to come from the main leaf stem and slowly affect the whole leaf.i tested the soil all during the grow and got 7.0ph. i started adding ph down to their water but the soil ph didnt change.we are soo close to our 1st harvest and dont know if the plants will make it.the brown now extends to all the leaves even in the buds . HELP! I NEED TO LEARN WHATS UP if not for these girls for our next grow. thanks for being there, Veruca

[berrypilot]

🌱 Could it be a calcium deficiency? If you're already really close to harvest, the best bet might be to keep giving them their nutrient water at 6 pH and just hold on until harvest. Sometimes it makes it worse if you do a lot of changes right at the end. If the water is going in at 6 pH and out at 7 pH at least some of the roots will get it between 6-7 pH 🌱