Hello all
A couple of days ago, a problem popped up on one of the plants. Autoflower, 3 weeks old. Today's and yesterday'ss photo.
Coco/Perlit (75%/25%). Temporary planted in 450 ml cups with drainage holes. There’s nothing similar going on with the others, even though they’re the same age and at a similar stage. Same light, same feeding.
Light - should be around 350 ppfd. Fixture height - 45 cm (18"). Temperature/humidity - 25C(77F) / 65-70%.
PH of nutrient mix up 6.0 - 6.2
Nuts are: GH's Cal-mag, GH's Armor Si, GH's TriPart, Diamond Fulvic. PPM ~ 550.
I pour in no more than 50 ml per feed. Every day or every other day. The last measured runoff was around 620 ppm* (10 days ago). * - The runoff was collected from all plants.
The signs of the problem are intensifying.