I returned from the gym and in three years lighting the levels from the electronic ballast have been reduced by 20%. In comparing that to the Pulse Start fixtures in the gym next door the Electronic ballast fixtures were 20% brighter across the board both today and three years ago. The lamps in both gyms are still nice and white. Yellowing is a trade mark of magnetic ballast as they get older. The ballast where quiet which is a large problem with magnetic ballast when they get old. On another note I went by one of my favorite fish stores yesterday and took a reading on one of there tanks with (4) 400 watt doubled ended metal halide fixtures. At the top of the water over 5,000 foot candles and at the bottom in some places just below 100 ft. candles. Light meters run around $100 and I think maybe a good investment for MAAST. The members could leave a deposit and borrow them for a day to check the quality of there lights and also move corals around into the brighter areas. Remember magnetic ballast replacement kits are not that expensive to purchase and I think are well worth the cost in energy savings. I hope this article doesn’t make the magnetic ballast guys mad. I didn’t write it to down the standard, it’s just I am in favor of new technology. Remember the old days of tar ballast for fluorescent and HO lights. My industry fought changing to electronic back then too.