Weird leaf

[BigB6]

Hi, I was wondering if anyone can she'd some light on this problem. My pH is fine, my nutes are 3/4 strength Biobizz. The one things is I was using advance nutrients additives along with grow and bloom from Biobizz. I stopped the AN about a week ago in favour of the biobizz additives and this started to appear

 

[namvet25]

Are these leaves near the top or bottom of the plant?Are you using cal/mag?

 

[BigB6]

Are these leaves near the top or bottom of the plant?Are you using cal/mag?

They are mostly top and middle, pretty random to be honest, yes I'm using plenty of plant magic cal/mag. Growing in light mix

 

[Sleeper143]

Maybe a K or Ma deficiency...... looks more like K def with the yellowing from the outside edge, inwards

 

[BigB6]

Maybe a K or Ma deficiency...... looks more like K def with the yellowing from the outside edge, inwards View attachment 1189275

Thanks man. I had that picture but lost the feckn thing, you're right it does looks like that

 

[Sleeper143]

Thanks man. I had that picture but lost the feckn thing, you're right it does looks like that

Question is, what has caused the deficiency. Could be too much Calcium which would potentially lockout the K. BUT the spots you have could also indicate an advanced Calcium deficiency too

 

[BigB6]

Question is, what has caused the deficiency. Could be too much Calcium which would potentially lockout the K. BUT the spots you have could also indicate an advanced Calcium deficiency too

Very good point. I was pumping the plants with max cal/mag every feed. Time to ease off I think