1000 watt hps. Ph is 6.5 everythings good on the plant there no way there's too many nutrition in the soil. There's no chemical burn anywhere. Just those tiny sacks under a few stems. There about 2 feet tall. And way wider then my arm spand in a circle. Lights 18'' away from the canopy level. Stays 76 to 78 degrees. With fan 24/7. I don't think its a oroblem with the plant. Necaude when you remove it a clear liquid slowly comes out.