New Apogee 520 and Kessil 360WE

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Thor2j

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So I just got the apogee PAR sensor, the 520. It's supposed to be able to handle full wavelength into the blues. Rumors I heard is that the color selection on the kessils wouldn't effect the PAR output. Well that's completely not true.

I will put up a complete analysis tomorrow with many different intensities, colors, and height above water line.

My first thoughts are that the PAR is pretty low for whatever reason. I had my lights 8" off water , 35 color, and 60 intensity. Readings 6" under water only 75, 13" 50, bottom middle 40. 22" inch tank with 2-3" sanded.

One thing it did really help for was I was able to lower my lights an inch and a half before loosing anything on the edges and overlap. That was helpful. It put the lights about 6 1/2" off water.

From 35 to 40 to 50 color mix par went up from max point measured 152,175,191 accordingly. This was with 100% intensity.
 
I'm questioning the sensor as well.. Got xr30w pro's at about 80% and get about 130 par on the sand. Though I have whites, reds, greens very low, that's pretty low. I know my water is dirty but ya...

I'll make another thread so I don't hijack yours but I'm going to do a comparison against the seneye. :)
 
I'm questioning the sensor as well.. Got xr30w pro's at about 80% and get about 130 par on the sand. Though I have whites, reds, greens very low, that's pretty low. I know my water is dirty but ya...

I'll make another thread so I don't hijack yours but I'm going to do a comparison against the seneye. :)
Are u using the same sensor??
 
I've been renting a MQ-500 for the last two weeks. I have two radion gen3 pros on a 36" tank. My bottom middle reading at 18" depth, lights 8" AWL, 120 wide angle lens, and a ~20k color (SPS AB+ profile) is right around 130 PAR @65% intensity (compared to your 40 par at 60% intensity).

At 8" down from either light, I'm pushing 230 par (compared to your 75 PAR at 6").

Your readings sound really low to me.
 
I wonder if the sensor is bad or what
 
I could never get Kessils to read any PAR (useful reading) I think the dense matrix is completely different at light dispersion than your typical flashlight type led's.
 
Just an update to this. Apparently the new Apogee need to be corrected for underwater immersion, so u need to multiply your results by 1.33.
 

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