

Is anyone able to diagnose this for me? It’s now appearing on the majority of my plants. They were all started indoors in January, and have been under grow lights since. The lights are about 30-40cm from the canopy of the plant and I’m getting about 200-300 PPFD. I have been feeding these with chilli focus every other watering, but they haven’t actually been watered for about a week because I potted them up and top watered at that point to bed the roots in. The pots still feel quite heavy so I haven’t felt the need to water.
I have been hardening them off in the British weather, but it’s a bit of a colder week this week so keeping them inside.
Can’t see any mites, thrips or aphids in the vicinity. Any ideas?
by Professional_Run_973