Day 40 flowering help!

[Smokesteve]

Great white shark strain, fox farm ocean/frog blend. Using big bud by AN as a booster. Getting yellow feeder leaves that are dying way too early.

[Waltermelon]

Hard to tell with the pink leds. Are you feeding any cal-mag?

[Smokesteve]

No but that was my first thought. I'll grab some today

[Waltermelon]

Give it a shot and wait a few days. The leaves won't come back, but it shouldn't spread.