Yellowing leafs and white circles?!

[Cannabiskollektivet]

Hello AFN,

Saw this on one of my babies today, its a colorado cookie from Dutch Passion and grown under the following equipment.

GN Telos 10 Pro 285W LED
Growing medium: BioBizz All-Mix combined with perlite and clay pebbles
Nutrients: Cal-mag, micro, bloom and HD bloom (nutes at 50%).
PPM is around 1-1,1k and EC levels are around 2. Water is PH:ed to around 6,5 - 7,0.

Any ideas?

 

[namvet25]

First pic could be nute splash on leave and second pic could be cal/mag problem so up dosage and see if that helps.