I was not the first to say it, but that's what I do. Feed in the Am when the stomata are most open.
I was using biolink 3-3-3 back a few months ago and it left a major film on the plants that, while not too worrisome, was nasty to look at... Biolink 3-3-3 was an ingredient in Brix Mix, but has since been swapped out for something else. I have not noticed a need for a washing-off after applying Brix Mix. But I am pretty sure I am using it at way lower concentration than you are.
I was using biolink 3-3-3 back a few months ago and it left a major film on the plants that, while not too worrisome, was nasty to look at... Biolink 3-3-3 was an ingredient in Brix Mix, but has since been swapped out for something else. I have not noticed a need for a washing-off after applying Brix Mix. But I am pretty sure I am using it at way lower concentration than you are.