Par difference between 36" and 48" T5?

[Aquavaj]

The difference should be negligible right since the extra 15w on a 48" bulb is being used to light the extra 12"?

 

[RobZilla04]

I'd say it is safe to assume so. The lights aren't overlapping, they are extended over a greater area but the segments each cover should have the same (or close to) PAR numbers.

 

[oreo54]

Black line..

 

[Aquavaj]

That's what I thought too. On paper it proves it but the brain seems to think otherwise.

 

[T-5unsystem]

Black line..

This chart is fishy... For example you cannot run an ATI fixture with 3 bulbs. Not sure where it was found, but I'm calling BS on the data. No way AquaticLife has higher par than ATI as well, they don't use Miro Silver and they don't fan cool the fixture.

 

[oreo54]

This chart is fishy... For example you cannot run an ATI fixture with 3 bulbs. Not sure where it was found, but I'm calling crap on the data. No way AquaticLife has higher par than ATI as well, they don't use Miro Silver and they don't fan cool the fixture.

https://www.plantedtank.net/forums/10-lighting/184368-lighting-aquarium-par-instead-watts.html

The PAR numbers in those charts are for the actual light fixtures, with a full complement of bulbs. The exceptions are the ATI 4 bulb fixture, which had only 3 bulbs in it, and the calculated PAR shown for one bulb for Tek and Catalina lights. That last one for the Tek lights is usable by multiplying the number of bulbs by the PAR per bulb. But, Catalina uses different shaped reflectors in various light fixtures, so the number is only good for those with similar reflectors (the one bulb Catalina lights appear to use the most different reflector shape.)

...

It's only one set of data..and 2012

 

[T-5unsystem]

https://www.plantedtank.net/forums/10-lighting/184368-lighting-aquarium-par-instead-watts.html

...

It's only one set of data..and 2012

Like I said I call garbage since you cannot run an ATI fixture with only 3 bulbs. They use the same ballast we do and they have to run in pairs.

 

[oreo54]

Whatever........That was 6 years ago..

go contact the author..
https://barrreport.com/threads/converting-a-lux-meter-to-a-par-meter.11185/
https://barrreport.com/members/vaughnh.41/
seems to be bothering you so much...