Metal Halide Help

[bogart2892]

Hello I have some questions for someone who has some knowledge with Metal Halides. I have two Metal Halides one is used for outside lighting the other for plants. Both 175 watts. I'd like to use them both on my aquarium. The confusion for me is that they have different sockets but Both ballasts are m57 both probe start. I'd like to use 10k or 14k 175 bulbs. Is this possible? One of the lamps is a med and the other looks huge. Someone please help me. I'd like to purchase two of the same 14k bulbs and use the ballasts I have. Jon

[alton]

Mogul base (Large) and Medium Base (Small or Normal) If it is just the ballast you want to use I would check into buying new ones, new magnetic ballast kits for 175w MH are inexpensive. If you are starting from scratch depending on the size of your tank, I would move up to 250w MH.