I have a seedling with yellow color towards the center. Ends of the leaves are green. Otherwise growing well. My other seedlings are nice green everywhere. No nutrients added yet, just fresh organic soil.
Center yellow indicates what?
Strain = Northern Lights from seed
Soil in 5 gallon buckets = organic potting soil, worm casings, spagnum peat moss, perlite, sand, lime,
System = Indoor tent, soil based grow.
PH = 7 on cheap soil probe
nutrients = No nutrients added yet, just organic soil.
Indoor tent 3x4
Lights = Sun Systems 315W LEC 18 inches above seedlings. 18/6 cycle.
Temps; Day 75F, Nights 65F
Humidity; = not bad (California wet winter)
Ventilation = interior fan, no ducts
AC, = None
Co2; = No