Hank
- 91
- 18
Edges of leaves curling. This is a relatively new problem. Started a 2 to 3 weeks ago thinking it was heat stress I raised my light as high as I could and removed the 1.5in of SM from under the pots and dropped the light to 1000w. Temps are around 25 to 29c and humidity is quite low in 30s.
Not all the plants are affected to this extend some with just a few leafs some with none. So I don't think its heat related. I'm thinking its over fertilization. I have been dropping the EC, the last watering's have been 1.4 1.6 1.8 and 2.0 but sometimes I'm not getting enough runoff. The last watering at 1.4 EC had 30% runoff.
Still I think I might have a salt buildup. Dropping to 1.2 EC next watering.
Not all the plants are affected to this extend some with just a few leafs some with none. So I don't think its heat related. I'm thinking its over fertilization. I have been dropping the EC, the last watering's have been 1.4 1.6 1.8 and 2.0 but sometimes I'm not getting enough runoff. The last watering at 1.4 EC had 30% runoff.
Still I think I might have a salt buildup. Dropping to 1.2 EC next watering.