TheOtterPilotcommentedweek 53 years ago
Just my 2 cents, but your humidity is super low for the temp you're running. if you're about 77 degrees during the day, you should be at least 65%RH. Your Vapor Pressure Deficit (VPD) determines how your plant will uptake water and nutrients. if the balance is off, you will see deficiencies and toxicities because the plant isn't uptaking the right nutrients. also, consider bringing your pH down to like 6.0 or 5.8. Cannabis likes it on the acidic side, that can affect uptake as well.
Try using vpdchart.com and put your values in. It will tell you what your kPa is and in flower should be between 1.1 - 1.5 kPa. your values bring about a 1.78 kPa measurement and that is waaaaay too high. This changed my whole life.
I'd also consider running your nighttime temps within 3-5 degrees cooler, tops. I run my heater at 77 degrees at night so it's only about 1-2 degrees warmer during the day with the lights on.
I would fix anything environmental before I adjust my nutrients. :)
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