The old bulbs are still out there but are being replaced by David if a problem arises. Usually the places that have drastically slashed the price have the old bulbs. I do not carry the old bulbs at all. If a 400 wattt bulb is $40 than it is probably an old style bulb.
It was not the ballast but the thickness of the glass. There was no recall since it would be hard to measurte the glass thickness and that it was only like 600 out of literally thousands of bulbs.
The issue was also made alot bigger than it was on the boards by some other lighting manufacturers/vendors who took the oppotunity to slam CoralVue.
I speak with David about 3-4 times a week and would not sell a product i felt would be detrimental to peoples corals or an inferior product.
I recently sold a member a bulb and he received a bulb that had been damaged in shipping.CoralVue replaced the bulb no questions asked.