Marijuana leaves changing to yellow/brown HELP

Brandon J

New Member
Hey guys my setup is as follows im running a 1000watt hps I have 7 plants ranging in height from 40 inches to almost 5 feet and so Im 30 days into flowering and the last week or so I have leaves changing from yellow to brown and falling off having brown edges brown spots and I have been using General organics bloom and general organics grow organics the whole time so far I have used tiger bloom a few times and followed directions and I water until a little run off but here are some pictures please help me out
 

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