Broclee
Active Member
Vapor pressure deficit. The difference in water vapor pressure in the air and inside the leaf. Vpd effects the rate of transpiration of a plant as well as co2 uptake To Well my vpd was high real high so it made my plants transpire to much with inturn made them drink to much nute water with in turn made them uptake to many nutes and lock out. So why was my vpd off. Because the mini split unit a.c does such a great job it was removing all the needed humidity. The solution to the problem was to head to Lowes and buy a evaporate cooler / humidifier so when the lights are own I can add the humidity needed. With the cooler in place plants flushed again and lightly fed they look like they are recovering but won't know for a few days. Here are some pics, day 42 of the girls with 30 more to go hopefully we didn't stunt them and they continue to swell