I got the apogee sq-420 and made my own stick out of 3/8 ro tubing lol I'm trying to make sure I set it accordingly to measure my leds now it has multiple options what should I be setting it on to measure my 32hd and 16hs over my reef tanks ?I just rented the 510 from BRS. But saw the 420 and was wondering the same thing. The only thing I would add is that if you wanted the handle you get with the rental, it's like $60 also. But something could also be DIY with PVC or something also.
Oh man!!! Give a treat to that dog for uncle A. grandis, would you?I've rented the Apogee MQ-510 a few times from BRS to measure par. Has anyone used the SQ-420 USB version? Is this an adequate substitute for the 510? The SQ-420 is $234. To me, this might be a better investment vs. renting the 510 for $70.
Does the SQ-420 measure as accurate as the MQ-510?
I have LED and T5 combo.
Since it isn't much more IF going for the 510, suggest upgrading to this:the 510 works better on reef lighting they have similar spectral range but the spectral sensitivity is much better on 510. With that said either one should get you close enough for our purpose.
The 420 is the 210 and the 520 is the 510.
IF you do, probably best to go RIGHT to the extended range one.following.. about to ditch my old mq-200 to confused on error corrections for led blue spec and then immersion factors...
With the recent release and success of our new ePAR (SQ-610-SS Series, 380-760 nm) sensor line, Apogee has decided to retire the ePFD (SQ-620-SS Series, 340-1040 nm) sensor line as of May 19, 2021.
The ePFD sensors have been excellent sensors, but the new refinements to the optical filters in the ePAR line means they can be used to measure all light sources, not just LEDs, making the ePAR sensors more versatile. This decision to discontinue the ePFD sensor line was also supported by new research from Dr. Bruce Bugbee's lab at Utah State University that has shown that no photosynthesis is caused by wavelengths above about 750 nm. The older ePFD sensor's extremely high upper cutoff sensitivity level of 1040 nm meant that radiation sources with peaks above 750 nm, such as metal halide lamps, could not be reliably measured for their extended photosynthetically active radiation levels with the ePFD sensors.
Don't feel bad .Li-Cor had a software bug that wasn't noticed and YEARS of underwater data collected using them was wrong.ok.. so it can go underwater.. NOT to sound stupid but here goes... I am just catching up on all the new ones since I bought mine years ago (mq-200) the MQ-510 is good to go underwater, and no need to do any immersion calculations ect... the SQ 616 .. usb unit only... is good to go underwater .. but is there the issue of conversions ect ? thanks... If i seem totally confused.. yes I am.. thanks
The correction ends up being about a 7% increase for the old Apogee MQ-200 PAR Meter, and a 32% bump for the new MQ-500 PAR Meter. However if you’re interested in getting an even more accurate reading of Photosynthetically Active Radiation in your aquarium, Apogee has officially released an underwater PAR correction calculator.