burns

hi all , i have these plants living with me at moment , they are not mine , but im a bit concerned for them , there is currently 10 dark devil autos and 1 somango auto , the current set up is 1.4 meter tent , 1 cfl 8900 lumis light hanging low and a 600 w hps dual spectrum light , which he uses...

plants seem to look pretty good. I've got 2 gorilla glues and 2 sky walker ogs sitting in 5 gallon smart pots using fox farm ocean grow, RO water with calmag and every 10 days I top the soil with growilla veg from botanicare. The first 2 feedings I think I underfed as I wasn't very informed how...