Seeing Spots?

[101 Runner]

Seeing these spots on a few leaves on both coco pots and in DWC? Using Dutch Master Gold line A and B with hygrozyme and rapid start. Toned application down to 300ml per 50 gal of A and B, 30ml hygro, and 20 of rapid. Looks like phosporous deficiency?

 

[bearbud]

I to had the same problem and used epson salts 2teaspoon per gal.every once ever other watering.

 

[CageyBee]

Its hard to say with the one pic but from the info youve given id say feed them a little bit more. 6ml/gallon of base nute is pretty light for most mixes