u/CasualSparrow

This is my first year doing blueberries. I did not think to check the plants for diseases or issues when purchasing from a local nursery. This bluecrop has had these purple spots get worse over the few weeks I have had it. I have another bluecrop from the same nursery and a northland from a different one. All have the same soil mixture. The other two are doing perfectly fine and I cannot see any of these purple markings/spots. I found a scout guide on reddit and I think maybe its a magnesium issue? But I am completely lost. I even checked tools on two university sites and nothing exactly matches what I see but I could be missing something.