They started mid-may so they're not that old they were doing great they were doing awesome then all sudden they started curling all of them except one I'm thinking somebody poisoned them cuz it's not the heat cuz it was the heat the other one that's doing great still would be affected also...
I have them under shade its been 117deg water every night mirical grow soil shich says 6mo of feeding. Like a dummy i topped all the colas plus the top 3days prior the the pics