I water when I feel the pots about as light as a pot with just coco no water.
That's a problem. Coco is a hydroponic medium. You can't let it dry out between waterings like you (must) do with soil. Even when it seems "saturated" coco holds enough air to maintain healthy roots. You can water every day. Some folks do it twice a day.

If you've parched your roots, the damage may be irreparable. Are your other plants in coco as well?
DreadedHermie Reviewed by DreadedHermie on . New to this...should I be concerned?(pic) Hey I just got my mmj card and set up to grow so I am very new to this and I am concerned about what my 3 s. diesels are doing. All 3 look the same. No other plant in my room looks even close to this. I'm using canna coco with the canna line of products. I'm growing in smart pots. I water when I feel the pots about as light as a pot with just coco no water. The plants are under a 1000hps enclosed light at "24 above with inline ducting and fans to cool. Room temp is a steady 76 degrees Rating: 5