Nizza
Well-Known Member
i have seeds that get purple stems, and sometimes I don't. I believe purple stem indicates lockout, and for me is usually from temperature stress while germinating, moisture stress, or nutrient stress. I used light warrior for the first time the other week to germ seeds straight into. I hadn't germed seeds since a long time ago, and usually cloned into rockwool, so i wasn't paying enough attention. Root zone was at a constant 74f, drying the root zone, and also there wasn't enough nutes in the soil after the seedling broke surface. I slowly just gave it a little more water and nutes, and insulated the little pots of soil, and the temps go down to 69, and the plants started to green up on the stem and look healthy. I also forgot to mention i may have had the lights too close..
on the plus side i have a good amount of growth and NO stretch, but it's been a little under a month since planting..
if your using a soil with compost in it i wouldn't worry about nutrients right now, just over/underwatering and proper light+ventilation +temps, which all seem spot on.
i don't know if running your exhaust 1 min on 10 mins off is good, i'd just run it 24/7 but not have the intake blow over the seedlings, but have an oscillating fan that you can adjust manually
on the plus side i have a good amount of growth and NO stretch, but it's been a little under a month since planting..
if your using a soil with compost in it i wouldn't worry about nutrients right now, just over/underwatering and proper light+ventilation +temps, which all seem spot on.
i don't know if running your exhaust 1 min on 10 mins off is good, i'd just run it 24/7 but not have the intake blow over the seedlings, but have an oscillating fan that you can adjust manually