Light measurements - T5HO vs T8

[Reptile]

I thought this might come in handy to other people.
I recently changed the lights I had for some of my orchids (shoplight fixture with 2 4ft T8) to T5HO (3 bulbs).
Here are the light measurements at 23 inches from the bulbs, in the middle.

2x4ft Philips Alto (5000 K, 32W) - 1650 lux (153 footcandles)
3x4ft Sunblaze T5HO (6500 K, 54W) + reflector (95% reflective) - 7900 lux (734 footcandles).

[Call_Me_Bob]

Originally Posted by Reptile

I thought this might come in handy to other people.
I recently changed the lights I had for some of my orchids (shoplight fixture with 2 4ft T8) to T5HO (3 bulbs).
Here are the light measurements at 23 inches from the bulbs, in the middle.

2x4ft Philips Alto (5000 K, 32W) - 1650 lux (153 footcandles)
3x4ft Sunblaze T5HO (6500 K, 54W) + reflector (95% reflective) - 7900 lux (734 footcandles).

so for the older fixtures, you has 4 bulbs in all? i have the same thing i have four bulbs in all [two fixtures right next to each other] and im trying to see how close they need to be

i grow

catts
phals
onc.
dens

[Reptile]

I said I had two bulbs, not four.

[Call_Me_Bob]

okay, thanks!