Grow4me
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I grow autos, everything was great until September when I added another hps600. I upgraded the fan, added more plants and thought I was doing great. Then, the yellow leaves started. These pictures are three different plants at different ages all with the same problem. It starts in week 5 and slowly takes over. I use happy frog soil and ionic grow and bloom. I add calmag and maintain proper ph. What the hell is going on? Any help would be appreciated.