Strain: 1 White Widow (5 days old), 1 Super Silverhaze (9 days old)
System type: Indoor closed system. Currently in Solo Cups with Jiffy Starter soil. Once root bound, I will transfer to GH 4120 Waterfarms
PH of run off: 5.8 - 6.1
Nutrient Strength: N/A
Light: Currently 150W CFL and a T5, stepping up to a Kind K3-L450 LED bank. 18/6 cycle.
Temps: Low 64F (night), High 78F (day)
Humidity: Low 24, High 38 (augmented with portable handheld humidifier)
Ventilation system: Yes, 4" inline 165CFM for exhaust. No filter currently. Clip fan at intakes for circulation.
The Super Silverhaze was germinated 14 days ago, but didn’t sprout for 5 days. We transferred to starter pucks to start with, but found that they were too dense and tight. After 9 days above ground, the SSH still hadn’t thrown a tap root past the puck. The White Widow was in a puck too, but I squeezed it quite a bit before inserting the seed. It’s taproot extended almost to the bottom of the cup. They are both now sitting in just the starter soil and getting nothing but 6.0 - 6.1 pH water for the past week. Both seedlings have started to show their 2nd nodes.
Current concerns are the humidity. I’ve been thinking of stepping it up, but I don’t want to spring for a humidifier if the RH is going to be stable with the hydro tanks in the box. Adding 8 gallons of moving liquid and a couple of plants should increase the RH, but I’m not certain.