I'm probably not going to harvest the whole plant at once, so flushing may be out. I've got big buds at the tops close to the lights but small buds just starting to form trichomes near the bottom.
I'm hoping to clip from the top and let the ones underneath grow...basically keeping that up until I run out of plant, then when I've hit the last buds, flush and harvest the whole enchilada.

I didn't even THINK of nutrient burn!!! I've been using Miracle Grow's "Bigger Bloom's" which has nitrogen in it. could that be the problem? I've heard to avoid nitrogen at all costs during the bud phase.

This will give me a good start in the investigation.
8 shades of Thank You!!!!