Outer half of fans shriveling up

[A.k.a]

8.5 week into flower, suddenly the leaves are looking weird. It’s been unusually humid the last week so rh has been 55-75%. The fan in the back right is the easiest to see what’s going on. Not every leaf is starting to do that but a lot.

 

[WWNugs]

How hot it there? Fans will start to dwindle now that she is almost done.

 

[A.k.a]

Mid to high 70s.

It doesn’t look like normal leaf fade though, at least not like my other plants had where they just went yellow.

 

[myke]

P deficiency ?

 

[mudballs]

looks like you've been running that hotrod full throttle this grow...overfertilization

A heavy-handed approach to nutrients is ill-advised. Excessive doses of nitrogen-rich vegetative growth base nutes can cause clawing in leaves. Sometimes, they will even canoe. Similarly, overdoing it with the phosphorus and potassium during flowering will cause curly cannabis leaves and scorch the tips. Chlorosis is a common symptom in both cases

 

[A.k.a]

I’m thinking it’s verticillium or fusarium

 

[thisbuds4u101]

Looks like a heat problem to me or overwatering.

 

[Wastei]

I’m thinking it’s verticillium or fusarium

Fusarium is often more dramatic than that. Every single leaf hanging because the plants vascular system is being eating from the inside out. They die in a couple of days.

I've only had fusarium a couple of times, and don't think that's it. More leaning towards low pH and overferting.