lighting New fixture

[alkhall]

Well, an old fixture reconfigured.

I had an old 6 lamp T5HO highbay I scavenged from a warehouse retrofit job back in 2019. It has been lounging in my basement since and I finally got around to converting it to a 12 lamp fixture.

Found some twin T5HO tombstones on Amazon, bought three 4 lamp ballasts, did a little Dremel work on the tombstone mounting plate, and:

Lamp layout (A at top) with on/off schedule.

I will get it hung up tomorrow and do a Photone test on it.


Thanks for looking.

 

[The Hot Pepper]

 

[alkhall]

OK, took reading with Photone app. Using Fluorescent Daylight setting.

12 inches down, centered.

The app is NOT calibrated for the higher frequency wavelengths (UV, 420nm, 460nm) lamps.

A lamps:
PPFD = 247
DLI = 14.3 @ 16 HOURS
LUMINOSITY = 16000 LUX
CCT = 5150

A + B lamps:
PPFD = 390
DLI = 22.4 @ 16 HOURS
LUMINOSITY = 25100 LUX
CCT = 11900

B lamps:
PPFD = 142
DLI = 8.15 @ 16 HOURS
LUMINOSITY = 9200 LUX
CCT = >12000

C lamps:
PPFD = 70
DLI = 3.95 @ 16 HOURS
LUMINOSITY = 4400 LUX
CCT = 10200

ALL lamps:
PPFD = 437
DLI = 25.2 @ 16 HOURS
LUMINOSITY = 28100 LUX
CCT = 10900

Frankly, I am somewhat disappointed with the intensity. However, I do have 6400K LED tubes I can swap in to increase that.

Overall, the project was a success, and less than half the cost of a new 12 lamp fixture.

 

[alkhall]

Been trying different lamps and layout.

Picked up the https://www.amazon.com/Wavepoint-Universal-Replacement-Aquarium-54-watt/dp/B00FQ87DO2 for $17 and change, must have been mislabeled.

Photone app readings, Daylight Fluorescent setting;

12 inches down and centered, all lamps on:

PPFD = 420
DLI = 24.2 @ 16 hours
LUMINANCE = 27300 Lux
CCT = 11350