Reefbreeder's 120watt dimmable fixture review with pics and par numbers.

Yup, we like the Dim4 a lot, the only challenge with it is surface mounting, as the screen is about 3/4" higher than the buttons, we ordered some acrylic rods for the SuperNova control. We don't usually use pwm dimming, however it can be done, we just need to get the typhoon for calibrating the 60-48P

 

For your par tests, which mode did you run the test under. I'm using the apogee mq200 right now and found between the sun mode and electronic mode you will get two different results. The electronics mode is the better way of getting a proper reading of LEDs. Less of a difference, remember sun is full spectrum compared to LEDs being multiple source lighting. The manual says sun will give you 10% dif and elec mode only has a 2%.

 

I believe we did sun mode, and compensated 20% for the LEDs, as stated on apogees site

 

I did the sun mode, I think I took 15% for this particular model of meter.

 

20% where on the site did you get that?
Apogee Instruments: Light Intensity Measurements for Light Emitting Diodes (LEDs)
This chart I was using goes up to 8% but I don't see the 20% . Could you show me the link for this info please. I am just trying to piece together the best way to measure LEDs.

 

Right here: Apogee Instruments Quantum Sensor - Spectral Response

 

Bottom of pagehttp://www.apogeeinstruments.com/pdf_files/QMSS.pdf

 

We used a different meter, the mq-200. Maybe the older model?

 

When are the 120w tri dims coming in?