INteresting. Thanks.
Wish I was on the island, I'd bring in all my ballasts and bulbs for you to test
I have a dual 175w ballast with two hamilton? bulbs, dual 250w ballast with 10k ushios, 2 x 400w ballast from venkiw with two 400w 10k SA bulbs. Also have a dual 400w ballast (from JL) with two 400w 10k ushios.
I need more lighting