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Old 01-20-2006, 10:26 PM   #1
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Ballasts.... What are they and what do they do?

I think it has to do with lighting but really i have no sweet clue.
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Old 01-20-2006, 11:05 PM   #2
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They are step-up transformers that power flourescant lights.
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Old 01-21-2006, 02:13 AM   #3
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Are they a nessescity or something that is "nice to have"? I understand they power lights but so does a plug in the wall. Why would you need one?
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65 gal reef
EQUIPMENT:
2 PC's 192W each , 20 gal sump/fuge
LIVESTOCK:
4 false clowns, 2 firefish, cardinal, midas blennie, toadstool, zoos, shrooms, trumpet coral, torch, pagoda, frogspawn, poylps, red open brain, devils hand, hermits, snails, 3 cleaner shrimp, coral banded and a emerald crab.
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Old 01-21-2006, 09:17 AM   #4
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Flourescent, vho, power compact and metal halide all use a ballast. Without a ballast the light will not work.
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Old 01-21-2006, 10:11 AM   #5
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These light bulbs are very different from incadescant bulbs.

Incadescant buld work off of 120v current. The electricity flows through the filament. The filament has a high resistance and there for heats up and glows, just like the element on an electric stove or in a toaster.

Flourescant bulbs, regardless if it is normal output, very high output, power compacts, T5's or even metal halides all need higher voltages to make them work. In simple terms these bulbs have no filament. Thery are filled with a gas. This gases electrons are "excited" by electrical current and glows. The electrical current be of a high enough voltage to accomplish this.

If you are using incandescant bulbs you do not need a ballast. If you are using flourescant bulbs of any type they will not work without a ballast.

Brian
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Old 01-21-2006, 10:25 AM   #6
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Thanks for the quick responses. Is this something that you have to purchase separate if you want to run this type of lighting or does it come with it in a compact lighting system? TIA
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65 gal reef
EQUIPMENT:
2 PC's 192W each , 20 gal sump/fuge
LIVESTOCK:
4 false clowns, 2 firefish, cardinal, midas blennie, toadstool, zoos, shrooms, trumpet coral, torch, pagoda, frogspawn, poylps, red open brain, devils hand, hermits, snails, 3 cleaner shrimp, coral banded and a emerald crab.
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Old 01-21-2006, 10:26 AM   #7
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It will come with the fixture you purchase. The bulbs, however, may or may not be seperate.

Brian
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