yellow leaves

I'm a first time grower, just over one week into a 12-12 light cycle on a 4 month old Super Silver Haze mother plant. She was beautiful and healthy throughout until a few days ago, when I noticed that the leaves on the underside and interior were yellowing, curling, wilting, and being shed...

Hi All, I'm new here, and new to growing, bought a Cool Cab hydroponics setup and have one plant (unknown bag seed) about a month old and other seeds are about two weeks old. The problem is that all of my plants are getting yellow leaves and brown spots and while there is also healthy...

hi all can someone tell me whats going on with my plants/ i have 6 plants; 2 gdp , 2 grapefruit kush, 2 grapefruit diesel growing in 5gal net baskets in 5 gal buckets in a recirculating drip dwc system with a 40 gal tank .flowering stage 2 1/2 weeks into 12/12 . 1000 watt hps 18-24 inches...