Please tell me what could be the problem ... On the new leaf, yellowing ..
14 day
Land Cannabiogen Automix 2.0 (many fertilizers already inside) land for autoflowers.
That looks like a classic case of overwatering. Iron is one of the first deficiencies to show up after symptoms of stiff, drooping Leaves. Let her dry out.
just rad about lux reading.. you may want to raise light a tad.. difficult to tell with lux.. but if that started as a pale spot between veins then spread, that could be light burn... separate from the claw.
how often are you watering? and do you soak the entire pot to run off? lets chat in private message and we can figure this out! little arrow bottom right corner of the page..
Thanks. I'll move it up. Only LED COB is on now 50w. And lightmeter shows there 35k LUX and another strain near feels great with 43k LUX. Perhaps something other than light?
yeah i'm going with light burn man, the edges of those leaves curling up like that and now the yellowing of new growth.. i'd say move your lights up some and see how she reacts.. just my opinion! Hope it helps!