Problem with leaves

This plant is about 5 weeks into flowering, leaves are rusting out. Mostly on interior of leaves. Its been fertilized every other week or so no other problems. Any input is appreciated. In soil under CFLs.

are you able to give more info? looks like you overdid it on ferts and 5 weeks into flower is the time you tend to stop ferting so they will be free of fert at harvest. maybe 2 more weeks, nothing but water, let them die. harvest.

Nutrient issues - remedy is to flush - then enjoy the fruit's of your labor