Burn, Mag, Cal or what?

Only two of the four girls have any of these signs. What you see is the worst of them, the other leaves are not as severe. I'm just not sure if this is nute burn, too little calmagplus, too much calmagplus, or something else. Temps, humidity and pH are perfect. No bug issues. I even did a water/water fed this time and this has slowly showed up in the last week or two since 12/12 switch. Not too worried but I hate not knowing wtf?

not burn give a dose of mag cal

anyone else?

It does look like an injury and not a deficiency. My opinion. cn

Temps? Looks like heat stress to me or some sort of environmental stress to me.

I'm thinking light or heat stress on a growth tip three, four weeks ago. A tiny lesion unfolded to yield this. cn

cannabineer said:

I'm thinking light or heat stress on a growth tip three, four weeks ago. A tiny lesion unfolded to yield this. cn

Click to expand...

Nice....