i highly doubt it's fert burn as it's pretty hard to burn with organics. i've been using the biobizz line for a few grows now, with no burn issues. you especially shouldn't have any issues with that application rate.

i definitely think you have another issue.

your plant looks small for 5 weeks. this is possibly related to the high humidity.

not to mention, i'm not too found of your light. have you used this before or seen decent results from one?


-shake