Growing 4 different strains in Black Gold Organic soil in 5 Gallon buckets under 1000 watt hps. 1 of my sativa plants is sick. Here's a leaf off of it. None of my other plants are showing any signs of sickness.
Looks to me like a pH problem, quick question- is that a lower leaf that doesnt become much Light or is that how all the leaves are looking??
SOil- Black Gold Organic Nutes- none Water- every 3 days Light- 1000 watt HPS That is what all the leaves on just that 1 plant look like. the other 19 plants look great.
What's different about that one plant? Find that, you find your problem... It almost looks like it got frosted...frozen...
The room stays at 78-80 during the day and when light is off it drops to 68 All the plants were planted at the same time with the same soil. I found this page: The Complete guide to Sick Plants,pH, and Pest troubles! - International Cannagraphic Magazine Forums and it apears I may have a potasium defeciancy. Not positive though.