gflat65
New member
We got the quantum meter and I've been playing with it. It gives Photosynthetic Photon Flux (micro mol/s*m^2). I got some interesting numbers under the different lighting set ups. Measurements were taken just below water level (with the slightest bit of water filming over the sensor-proximity to light makes a huge difference- and ~6" below water level-hand balanced
).
125-(3)-250W DE 14K Phoenix with dirty sheilds~3 months old
Left to right
PFO pendant and ballast/Aquamedic pendant and ballast/PFO pendant and ballast
790/1350/985
470/690/490
VHO's by themselves (URI) ~ 12 months old-passed due on replacements
45
45
120-(2)-175W Ushio 14K's (run on cheapo electronic ballast from ebay that runs two bulbs...) ~3 months old
395/390
225/210
7.5 frag tank-(2)-65W PC's (Odyssea 50/50 and Odyssea Actinic 03) taken from middle area of lighting fixture ~1 month old
135
87
10 gallon 'work' tank (2)-screw in 20W Coralife 50/50 PC's ~6 months old
96
60 (hard to believe these as I don't think most things are getting enough light)
Jenn's 20L (2)-75W VHO's ~12 months old
105
80
20L 'QT'-175W XM 15K ~ 4 months old
100
50
The DE numbers were alot higher than I expected. The 15K XM seems almost worthless in output... A few notes in this thing. It jumps around alot, so in many case, you have to extrapolate a number. It needs a fixture that can hold it completely level and steady and my hand just doesn't work for that, esp. in current. I'd like to play with it for a few more days to a week, then I think Jack (crumpletop) is next. I guess we shoudl start a list. This thing was not cheap, so we want to make sure it gets taken care of.
).125-(3)-250W DE 14K Phoenix with dirty sheilds~3 months old
Left to right
PFO pendant and ballast/Aquamedic pendant and ballast/PFO pendant and ballast
790/1350/985
470/690/490
VHO's by themselves (URI) ~ 12 months old-passed due on replacements
45
45
120-(2)-175W Ushio 14K's (run on cheapo electronic ballast from ebay that runs two bulbs...) ~3 months old
395/390
225/210
7.5 frag tank-(2)-65W PC's (Odyssea 50/50 and Odyssea Actinic 03) taken from middle area of lighting fixture ~1 month old
135
87
10 gallon 'work' tank (2)-screw in 20W Coralife 50/50 PC's ~6 months old
96
60 (hard to believe these as I don't think most things are getting enough light)
Jenn's 20L (2)-75W VHO's ~12 months old
105
80
20L 'QT'-175W XM 15K ~ 4 months old
100
50
The DE numbers were alot higher than I expected. The 15K XM seems almost worthless in output... A few notes in this thing. It jumps around alot, so in many case, you have to extrapolate a number. It needs a fixture that can hold it completely level and steady and my hand just doesn't work for that, esp. in current. I'd like to play with it for a few more days to a week, then I think Jack (crumpletop) is next. I guess we shoudl start a list. This thing was not cheap, so we want to make sure it gets taken care of
.
. It was nearly $300, so we want to make sure it is treated well.
