T-5 HO Compared to PC...

taketz · 04/11/2007, 04:00 PM

Long story short, I have a Workhorse 5 ballast which will light PC's, which I already own, and t5 HO.

Now, does anyone actually know how many Lumens/Watt or Par/Watt a T5HO bulb puts out as compared to a PC bulb? I looked around for a bit and couldn't find the answer so hopefully someone here can produce a link to some info.

Thanks!

pjf · 04/11/2007, 08:45 PM

Here are some efficacy figures and graphs.

â€¢ PC or pin-based high-wattage compact fluorescent lamps (HW-CFL) generate 50-70 lumens per watt: http://lightingresearch.org/programs...L-efficacy.asp
â€¢ T5 lighting produces 90-100 lumens per watt: http://www.lrc.rpi.edu/programs/nlpi.../lat5/pc1a.asp

T5 fixtures with individual reflectors will direct even more light into your aquarium that would otherwise be wasted.

B33FST3W · 04/11/2007, 09:39 PM

T5 > PC

rickh · 04/11/2007, 10:13 PM

Here is some food for thought guyZ.

Take a typical commercially produced light that you could put over a 2' wide tank, the figures are similar for 3 or 4 foot lights. A standard 2 bulb 24" PC light uses two 65 watt bulbs that produce about 65 lumen/watt. Thats 2x65x65=8450 lumens. The newer t5 bulbs produce about 90 lumens per watt. The Current USA 24" 4 bulb T5 light ( please don't start telling me about the reflectors) yields 4x24x90=8640 lumens. The T5 unit uses less electricity, but the light output is about the same. Go figure

04/11/2007, 04:00 PM	#1
taketz Registered Member Join Date: Apr 2004 Location: Orlando, Fl Posts: 504	T-5 HO Compared to PC... Long story short, I have a Workhorse 5 ballast which will light PC's, which I already own, and t5 HO. Now, does anyone actually know how many Lumens/Watt or Par/Watt a T5HO bulb puts out as compared to a PC bulb? I looked around for a bit and couldn't find the answer so hopefully someone here can produce a link to some info. Thanks!

04/11/2007, 08:45 PM	#2
pjf Premium Member Join Date: May 2005 Location: Colorado Posts: 2,954	Here are some efficacy figures and graphs. â€¢ PC or pin-based high-wattage compact fluorescent lamps (HW-CFL) generate 50-70 lumens per watt: http://lightingresearch.org/programs...L-efficacy.asp â€¢ T5 lighting produces 90-100 lumens per watt: http://www.lrc.rpi.edu/programs/nlpi.../lat5/pc1a.asp T5 fixtures with individual reflectors will direct even more light into your aquarium that would otherwise be wasted.

04/11/2007, 09:39 PM	#3
B33FST3W Registered Member Join Date: Aug 2005 Location: Atlanta GA Posts: 173	T5 > PC

04/11/2007, 10:13 PM	#4
rickh Registered Member Join Date: Aug 2005 Location: Lost_in_Michigan Posts: 1,306	Here is some food for thought guyZ. Take a typical commercially produced light that you could put over a 2' wide tank, the figures are similar for 3 or 4 foot lights. A standard 2 bulb 24" PC light uses two 65 watt bulbs that produce about 65 lumen/watt. Thats 2x65x65=8450 lumens. The newer t5 bulbs produce about 90 lumens per watt. The Current USA 24" 4 bulb T5 light ( please don't start telling me about the reflectors) yields 4x24x90=8640 lumens. The T5 unit uses less electricity, but the light output is about the same. Go figure