What type of medium; soil What brand and type of soil? Top soil from local garden nercery Indoors or outdoors? indoor What strain? big bud How old are the plants? 4 months What type of lights and how many watts? 1 x 250 W HPS + 50 W cfl How far from the lights? 18 inch What is your watering frequency and source of water? mt. spring water What, how much and when was it fed? NPK? dog poop, some miricle grow. every other two weeks What is the medium/runoff pH and PPM if in hydro? 6.5 What are the temps and humidity in the room? day 80-85 F/ night 60 F What size pots? 2 gal Any bugs? Look real close. Gnats, but controled with neem Any other pertinent info? These seeds are from cannabis-seeds.com. I know there not the best place to purchase seeds from, but, I didn't find that out till after my purchase. The yellowing started about a week and a half ago. In response, I put a layer of good vege matter compost on the top of the plant three days. Nothing happened, it still remained. I then gave it some epson salts plus a high P fert. thinking it was a Mg or S issue The symptom is yellowing on the top leafs. Plus there are little round brown burn spots on those same yellowing leaves. All on top leafs. Plus a droopy look only with top leafs though. Can someone tell me whats going on? In my opinion, flowering has halted along with growth. Is this a sulfur or a magnesium issue.
Looks like a Nitro Def which is normal during flowering but it only looks like it been flowering for a week or two, but to be honest those claw like leaves are a tell tale sign of to much over feeding with your flowering nutes back off them for a few day and just use water, this should help. oh ur using MG based nutes bad juju stay away from them and dont use dog crap it carries way to many pathogens, dangerous for u and the plant, buy some tomatoe food its okay if ur on a budget for flowering but only a few drops per litre, flush and restart nutes in 2 week only water my man, ur gonna need 8 gallons of ph balanced water to get it back on its feet good my man
your plants pretty big for 2 gallon pots, im pretty sure its gettin root bound, and heavy nute lock out, i would transplant to a 5 gallon and flush