bottom leave problems

jimcity21

Active Member
my bottom leaves keep turning yellow and dieing off through my whole grow. im about 3 weeks into flowering. i have had nute burn the whole time too. im using ocean forrest which i hear lacks cal mag so im using that now i think i notice a difference but is there anything i should change? not enough light at the bottom or is it a lack of nitrogen maybe more nutes?
 
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