Yo ho ho things are getting a little out of control here. By the end of this week the single plant has grown from the windows to the waaaaallls, measuring 30 inches across and somewhere around 20 inches tall. Humidity is a real problem now with all that transpiration, and because my house is 60-65% RH it is pretty hard to keep the tent humidity below 70% even with ventilation and a dumb thermoelectric peltier dehumidifier. The dehumidifier pulls 160-170ml of moisture out of the air each day but I feel like I might need something bigger (although I'm pressed for space already). VPD ranges from 7.6hPa in the morning and climbs to around 9.5hPa by lights out as the tent warms up.
I've seen a lot of people who use the Growmau5 / RapidLed "Far Red Initiator Puck" to help kick their plants into bloom but $37 shipped and it doesn't even have built-in scheduling? I designed my own puck with 4x Cree XPE-2 Far Red (730nm) LEDs, a driver, wifi access and control for scheduling and setting brightness, and while I was at it I added in 0-10V dimming with override dimmer potentiometer, as well as a DHT22 temperature and humidity sensor for logging. I call it the Initgnokt.
I am also seeing pairs of fine little hairs coming out at nodes, we definitely got a ladyplant here, hope to get some blooms coming soon?