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Someone please help. WTF is going on with this plant normal nute/feed watering schedule using bio bizz allmix and bio grow ferts, normal temps 27c day 21c night and RH 50-60%. 2 months in veg after topping and lst under 400w hps. Lots of growth new and old yellowing with black spots starting...

Ok thanks, i also raised my light a little and adjusted my circulation fan, hopefully they perk up a bit i have another two like this and two others which are in pretty good shape apart from slight yellowing bottom leaves. Thanks for the info dude

Thanks for the replies guys temps are 26c lights on and 18c lights off. Humidity is between 45-60% constant. How much of an issue is this ? and any tips on rectifying heat stress

[] [ ] Hey guys, so this is my first grow plants are under 400w hps in veg for 4 weeks. I have started getting leaf tip curl and a general yellowing of bottom leaves. Soil ph 6.5 run off ph 6.8 started correcting for a nitrogen deficiency about 7 days ago have also addes some epsom salts as it...