Hi - i have had 4 successful grows in the past (autoflowers). So the last 3 attempts have resulted in seedlings turning yellow and not growing.
I tried to duplicate what i did when successful but the seedling keep turning yellow early on.
for this attempt, I have the seedling in a solo cup with OF Happy Frog no add’l nutrients.
I added about 3-4 oz of water when initially planting the seed(PHd to 6.5)
they are about 10 inches from a 125w Hydrofarm Agrobrite CFL.
Light is on 24/7 at this point
Tent temp is always 70 - 75 degrees with RH around 40
I am mystified. Any thoughts? I have not really cleaned out the tent and components between grows - don’t know if that would matter.
No - they never did. I had the same issue 3 or 4 times in a row. So after eliminating all potential causes (watering, lights, nutrients, ph, etc), it left only the environment. So I thoroughly cleaned and disinfected my grow space and equipment. I had done several grows without a thought of cleaning. I started a new grow and have not had recurrence of the issue. I will say, though, that your yellowing doesn’t look quite the same as mine. So hopefully yours might still be fine.