can you shed a little light

[tims]

i am looking in to lighitng for the 120g. thinking of doing a DYI.
came across this in searching a while backfrom someone else here..
http://www.atlaslightingsupply.com/MHBallast.html

looking at the 250 w double tap.. question is .. what does double tap mean?
do you guys see aproblem with using some of the equipment from here?
So can you shed a little light ?

[hawaii4485]

the good thing about geting a MH box for a tank is that they can stop salt and water a little better then the commercial "for land" not water models

[tims]

found another one at www.usalight.com that has a ton of MH fixtures and parts that woudl seem to be a good thing to look at for prices too..

[wharyat]

Have you looked at electronic ballasts at all?

[tims]

just starting to look at everything now..

[Loverotties]

Tims double taps I think is that it clips in on each end of the bulb instead of one end (screwing in).

[Gatorbait]

I think double tap refers to the input voltage for the ballasts. 120, 208, 240, 277, 480, etc.. for different commercial applications. They usually have different wires for the different voltages just cap the ones you don't use. I made the mistake of buying a workhorse 7 ballast once that was set up for 240 and couldn't use it. Make sure you can at least wire it for whatever your home voltage is.

[Loverotties]

I'm sorry I thought you were talking about the bulb being doubled tapped.If your talking about the ballast then Gatorbait is right.

[Doug1]

Tim is this the one?
BL250/M58 250W Metal Halide Ballast Kit, Multi Tap 48.50

[Gatorbait]

Check with hellolights, I saw they just had some clearance 150/175w electronic ballasts on clearance for about $80. They'll run practically any DE 150w bulb and are comparable to magnetic 250w SE, plus they're cheaper and cooler to run. Only about $30 more than magnetics and they give you a lot more bulb options. I have one over my nano with a 20k ushio that cost me $130 for everything and I love it.