T5 at home depot - General Aquarium Plants Discussions

Zapins · 06-11-2006, 10:54 PM

I saw some very skinny bulbs at home depot that appeared to be T5's. I have never seen them for sale before. For some reason they were a little shorter then the standard 4ft bulb.

I was just wondering if anyone knew the lumen output of a T5 bulb vs 55w PC bulb?

AaronT · 06-12-2006, 06:35 AM

The lumen output of a NO T5 bulb will not be as much as a 55 watt PC bulb. The PC bulb is essentially a bent HO T5 bulb. Also, the 48" T5 bulbs are only about 46.5" long in actual inches. Hope that helps.

**czado** · 06-13-2006, 12:51 AM

Here are known CF from Ivo Busko's article on AB:

Code:

Compact flourescent 
bulb    watts lumens lumens/watt 
Dulux54    55  4800  87.3 
PC6700     96  8100  84.4 
PLL950     55  3800  69.1 
PC6700     55  4230  76.9 
Ott CF*    23  1200  52.2

Average is 73.98 lumens/watt.
Since the Ott CF sample drops that and is ~30% from the mean, I consider the average 79.4 lumens/watt, for what its worth.

AFAIK there is no T5 sample (and only one T5HO) in Busko's article, but every manufacturer site I have read has 104 lumens/watt.

(Busko's article also states PAReff uE/s/Watt is the best form of light measurement for our purposes. I have not seen a rating for this for T5.)