approaching week 6

im using a 1000watt hps 18 to 20 inches away from canopy.

temp is between 65 and 75 and humidity between 40 and 60% (maybemore)

foxfarm soil.

botanicare soil formula bloom

big bud

ph is a 6.0 to 6.2

no pics sorry..

my problem is i have purple to necrotic streaks or spots on the spiked leaves protruding from the buds. i dont know if its nute burn, a humidity issue, overwatering. I feed them 25 ml a gal of the botanicare bloom, and 18ml of the big bud. i noticed it and i flushed them twice, let the medium dry out between the two.. its not happening on the lower canopy. i know its not heat burn.

thanks

18 ionches is kinda close with a 1000 watter! is that light vented?.its hard to tell without pics..u will get alot more people commenting if u take a pic of ur problem! sorry i couldnt help but good luck bro!