First Grow (RDWC)

First week above ground, most of my difficulties have been in regulating temperature and humidity. With a humidifier running on high, 24/7, 50% is the highest I can get my room. Using the AC Infinity CLOUDLINE T6 has been good at keeping 3 LED lighting units at bay around 80*F (+- 2*F), but difficult to regulate at colder temperatures. To keep daytime temperatures lower, I have fitted an HVAC vent directly outside to pull colder air (outside temps in NE in Feb are 20-30*F on average, so shorter bursts of very cold air mix with the warm tent air to drop to desired temps with less vent time, allowing CO2 and humidity numbers to stay higher, longer, without adjustments). Super helpful to bring day time temps lower, but a struggle to keep night temps in a good range. Had to turn my Low temperature warning off because when it would dip below specified ranges, the vent would turn on, displacing warmer air with the cold air brought in from outside. As it got colder, the fan would turn onto an even higher speed, creating a vicious cycle of too much chill. A better understanding of the product would have saved me some of the worry, but all is well now. A space heater runs during the 6 hours of dark to keep temps in the low to mid 60's. Going to fit a flapper on the cold air intake to actuate under vacuum to close when system fan isn't venting. My water thermometer, TDS meter has proven to be unreliable. One of the Amazon purchases that should have been at a Hydro shop to eliminate poor quality products. Will be picking up a new one this weekend. Seedlings seem to be doing well despite not having perfect environmental factors. Roots pushed through the rockwool cubes after the first 3 or 4 days in a humidity dome Probably should have used slightly bigger cubes or just waited to transfer until a bigger root system starts, but we're testing things here.