I'd like to use my present Coralife Halide fixture with stronger halide bulbs. It's presently hosting 2-150W bulbs. I'd like to replace them with 250W bulbs. The housing of the fixture itself needs no reworking. The two 150W HQI (double ended) bulbs are easily replaced by two 250W bulbs. I'll pull new, larger AWG wire from the reflectors to the edge of the housing to accomodate the increased amperage draw. That's the easy part. :-/ The hard part as I see it, is putting a new, generic ballast in place of my coralife ballasts. Here's a few pics of the ballast and the connections. The two exterior 150 ballasts have proprietary connectors. I've been looking online for either a dual 250W ballast, or two 250W single ballasts. The latter would be more expensive, so I'm leaning towards the dual unit. Unfortunately, like my current model, they all seem to have proprietary (i.e. PFO style) connectors. I'm able to cut the connectors off and place a junction box inline to make the splices, but I'd rather avoid that if I can. Has anyone ever done this? If so, I'd love to know how you did it. What ballast did you use? How did you accomplish the connection between the fixture and the new ballast?