Quick help - T12's or T8's

[xfactor6699]

Could I use a t12 or a t8 what's the difference

[fort384]

T is the diameter of the bulb in eigths of an inch. I am not sure what you are asking...

[xfactor6699]

Will a t12 do the same as a t8

[Mr. Limpet]

Size primarily, but they're different wattages too.

http://www.ehow.com/i/#article_5426758

[xfactor6699]

I know I want the t12 cause of the higher watt

[fort384]

If the fixture is T8, you can't put a T12 in it, if that is what you are asking.

[Mr. Limpet]

Originally Posted by xfactor6699

I know I want the t12 cause of the higher watt

You have to match the wattage of the ballast and bulb. You can replace the ballast and would solve the issue.

[fort384]

The lamp holders would have to be replaced as well... so basically, a new fixture

[meegosh]

Added a bit more to your title and moved to the General Hardware/Equipment section.

[xfactor6699]

Sweet thanks everyone

[Mr. Limpet]

Originally Posted by fort384

The lamp holders would have to be replaced as well... so basically, a new fixture

+1

Forgot the reflectors/fixtures for t8's are smaller than t12's. Good call fort .

[spoonman]

If you are having to make a choice I would go with the T8's. I have a T12 fixture in the 240G tank and they are getting harder and harder to find. Also I was limited in the K ratings because they are T12. Even home lighting and commercial are going away from T12's to T8's. Just my 2 cents.