What can I do to save plants?

Hello! I recently transplanted my plants from smaller containers into larger containers with the same mix of organic soil with perlite (tested PH of 6.8). Recently my plants have been displaying signs of what looks like many deficiencies (spots, dark purple at edges of leaves) on all new and old growth. I haven’t fed nutrients in probably a week due to rain being the source of water recently. Previously had been using biobizz products. What can I do?
 

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