markalot
...
Thanks Matt and scrap.
I measured PAR again and again it was above my targets. Grrr. Water is crystal clear, so I decided to place the meter in a single location (where it would be still) and take various measurements at different light configurations. Here we go.
Lighting is BML 20K, A, B, C, C, B, A, BML 20K.
Key:
A = pure actinic, B = actinic blue, C = Coral.
B70 = blue/violet LEDs at 70%
W30 = white LEDs at 30%
With bulbs aprox. 9" above the glass lids.
B70, W30 = 271
B100, W30 = 286
B70, W100 = 300
B100, W100 = 316
B0, W30 = 234
LED Off = 225
Now, with B70 and W30 I raised and lowered the T5 fixture.
8" = 286
9" = 271
10" = 258
To keep the browned acro at the target 350 PAR I am running the lights at 9", B70, W30.
Whew! Posting so I don't lose this.
I measured PAR again and again it was above my targets. Grrr. Water is crystal clear, so I decided to place the meter in a single location (where it would be still) and take various measurements at different light configurations. Here we go.
Lighting is BML 20K, A, B, C, C, B, A, BML 20K.
Key:
A = pure actinic, B = actinic blue, C = Coral.
B70 = blue/violet LEDs at 70%
W30 = white LEDs at 30%
With bulbs aprox. 9" above the glass lids.
B70, W30 = 271
B100, W30 = 286
B70, W100 = 300
B100, W100 = 316
B0, W30 = 234
LED Off = 225
Now, with B70 and W30 I raised and lowered the T5 fixture.
8" = 286
9" = 271
10" = 258
To keep the browned acro at the target 350 PAR I am running the lights at 9", B70, W30.
Whew! Posting so I don't lose this.
Last edited: