Thanks to the OP for this thread, and all those who have contributed.
I have read many pages, and but have not seen (maybe missed) info on converting existing shop lighting from 8' 2-tube T12HO flourescent fixtures, to LED.
What would you suggest as the most economical, and what would be the least expensive. I understand that those 2 questions may have completely different answers.
My 7 y/o shop is 36x48, has 3 rows of 5 fixtures mounted end-to-end length-ways, surface-mounted to the sheetrocked ceiling. Ceiling height is 16', and flat for 18', then slopes down to 12' height where it meets the walls. Each row of lights is on it's own wall-switch.
Can I replace the tubes with LED 8' tubes, and leave existing fixtures in place? With or without the ballasts? Remove all the existing fixtures and replace with all new LED?