I wanna make another update right now!
They seem to be happy getting 1100ppm twice a day!
Internodal structure is real tight!
Gave them 1300ppm just now and hope they don't burn. If they are ok with that, by Sunday i will increase to 1500ppm twice daily and when it starts to bud, i intend on giving them 1800ppm three times a day! We'll see.