Possible heat stress or wind burn

Update: some plants seem to have either a ph issue/nutrient lockout from molasses/ heat stress progressed to light burn. Here are some pics of the leaves I removed. It almost seems like two seperate issues are happening. The leaves with color changes as well as burns is from our biggest plant, blueberry #2. The darker leaves with brown marks is from our smallest plant, white widow #1. Please help me identify the issues so I can deal with it. Thanks in advance
 

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