Have I ruined my onion seedlings with too much light?
I've had long-day onion seedlings under 15-16 hrs/day of fluorescent light for about three weeks, before realizing I should have cut back on the light. I've read that even a few days exposure to too much light can trigger bulbing, even in tiny seedlings, and if that happens, planting them out will yield marble-sized onions, even after a full season in the field.
How assured is this result? Have I ruined this batch, or is it worth planting them out (around 500) to see what happens? Should I start over?