What is this leaf saying

[BigB6]

Problem: Leaf looks weird

Medium/grow method: bio bizz light mix with a bit of added coco and perlite and some bat guano. Autopots

Feed: and supplements used: Biotabs range

water source: Tap, pH 6.5

Strain/age: auto critical xxl day 42

light used: lumatek Attis 300w

Climate: 25 degrees Celsius 77 Fahrenheit 50% humidity

Additional info: I was thinking maybe it's a phosphorus deficiency but then the other plants are fine. Anybody that can stir me in the right direction please

 

[Mañ'O'Green]

Looks like a potassium problem to me. Most likely a lock-out from too much N and can also be too much Mg. My guess would be the Bat Guano was too hot. In Soil you are just going to have to wait it out. As far as the other plants every plant is different and they all don't like the same nutrient mix or the soil did not get blended equally It happens.

Anyhow just PHed water until she looks hungry is about all you can do.