Tropical Fish Keeping - Aquarium fish care and resources

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-   -   T5 Bulb (http://www.tropicalfishkeeping.com/beginner-planted-aquarium/t5-bulb-49780/)

Welsh 08-20-2010 09:04 AM

T5 Bulb
 
I have been looking for a few weeks now and have finally found a T5 bulb on a website that I always use, its not 6500K but its close at 6000K. My tank at the moment holds a 15 watt standard bulb that came with the tank but the new bulb I have found is 24watt, will this be too strong for the unit? also the website doesn't show the measurements of the bulb, I don't know if a 24watt bulb will be the same length as a 15watt so hopefully someone can help me there :-)

Heres the link

http://www.charterhouse-aquatics.co....lb-p-1653.html

onefish2fish 08-20-2010 09:36 AM

well i know the 54 watts are 4 feet, and i think the 24s are 2 feet? but not 100% sure. i do think you'd need a t5 fixture for the bulb to run, you couldnt just switch bulbs out of your t8 or t12 fixture and expect it to work to my knowledge, but i could be wrong.

njudson 08-20-2010 10:58 AM

a 24 watt T5 bulb is going to be 24 inches long and will only work with a T5 fixture. The number after the T has to do with the size (diameter) of the bulb. T8s and T12s are thinner blubs than T5s I think and the fixtures are not compatible. I'm not sure what the 15w standard bulb you have is but it sounds like it might be a power compact? I think your first step should be finding out for sure what kind of light fixture you have so you can get the right bulbs

bones14 08-20-2010 11:17 AM

The T5 is the thinner bulb.It does need a T5 fixture though.T8 and T12 can use the same fixture.

Byron 08-20-2010 12:02 PM

Agree, you will need to know the tube length. Watts is meaningless. But as you do not have a T5 fixture, it wouldn't work anyway as someone mentioned. The prongs at the ends are different.

I am not a fan of T5 because it is very bright light, and one has to be careful selecting it.

Welsh 08-20-2010 01:45 PM

I thought I was finally starting to understand lol i'm not sure what length the bulb is, there is no information on the bulb or around it.

Byron 08-21-2010 10:06 AM

Quote:

Originally Posted by Welsh (Post 451623)
I thought I was finally starting to understand lol i'm not sure what length the bulb is, there is no information on the bulb or around it.

Measure the length of the tube, just the tube, not the prongs. It is a regular tube so it will be T8. Then, find a daylight or full spectrum type with a Kelvin rating around 6500K in that length that is a T8 and it will fit.

WisFish 08-22-2010 03:15 PM

When sizing a Tn bulb, the "n" is number of 1/8". A T8 then is 1 inch. A T12 is 1.5 inches. The T5 come in Normal Output (NO) and High Output (HO). T5 HOs are very bright. T5 NO not so much. Match the bulb type and wattage to what the fixture was made for.


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