I read a report, where they compare this one to a more expensive meter, and surprisingly, it was more accurate when calibrated to SUNLIGHT and not electric light - makes no sense, but thats what testing had shown.
You needed to go to the Apogee web site and place the order by 5pm USA Central time.
Then in the text message box of the order, say REEFCAST.
They will then manually apply the 40% discount to the billing.
This is through Apogee, all you do as far as Reefcast goes is use their name for the group order.
I bought one for our club.
I also have one of my own.
I think quite a few folks bought them so there will be a few running around.
I was thinking that if some or all of the folks that get/have this meter (including myself) could post the following info, it would be very helpful to us all:
1. Make, model, type of light fixture. T5, T8, MH, combo, CF, normal floro, incandescent, etc.
2. Bulb mfg, wattage, kelvin rating if applicable.
3. Distance of fixture from the water surface.
4. PAR range at the surface.
5. PAR range at the substrate.
6. Tank dimensions.
That way each person only does a few basic measurements, one just under the surface, and one at the substrate. Then getting a small range by moving the sensor a few inches back and forth would be easy and worthwhile IMO. For those with MH, this may be worthwhile, as the tubes would have more constant readings across the length of the tank.
I thought that this would give folks a good basis for selecting lights based on PAR rather than wpg. Since we all have the same meter it will help eliminate some variations in the results.
It would not be a controlled test or anything scientific, but would give some good and quite possibly surprising info.