I found this awesome corner tank at a garage sale a few weeks ago and I have it all set up after building a stand for it because of the odd shape. My only problem is the lighting it came with. The bulb in it is a 15watt 18 inch bulb but it says it should have a 17watt bulb. So I have been looking around but my problem is I keep only finding 24inch or larger bulbs. Am I just not looking in the right place or do they not make these size bulbs anymore? or what should I use in it's place? The tank is dated for 1999. You can see in the 2nd photo how hazy the light is, it's almost a blue/green color when you look at it.