MQ-510 Full Spectrum Underwater LED PAR Meter

In stock
Out of stock
$532.00 $532.00

- +

Purchase a new Apogee MQ-510 PAR Meter and return it for a refund within 60 days, EVEN IF YOU HAVE USED IT!

Measure your lights PAR with an Apogee MQ-510 PAR Meter. When you are done, return the meter back to us within 60 days from the purchase date for a refund, even if you have used it. If you do not need the PAR meter after tuning your lights, and just as long as the meter is functional, send it back to us for a refund minus a $100 restocking fee.
Click here to see more info on new Apogee MQ-510 PAR Meter Refund Policy


Increased Accuracy for Underwater LED Lighting Measurements!

Apogee's MQ-510 PAR meter is perfect for underwater testing of LED light intensity and immersion effect correction factor has already been applied through the monitor's firmware giving you the corrected underwater value.

  • Designed for underwater use
  • Full Spectrum
  • Works will all lighting types
  • Improved spectral response
  • 2-meter shielded cable


The MQ-510 Par Sensor has been specifically designed to give reliable and repeatable readings underwater with LED lighting. With an increased spectral range, and larger sensing optic you will get more precise readings with all types of lighting systems. Apogee now has the immersion correction factor installed in the meter and will automatically compensate for any effects underwater readings may have.


Apogee has calibrated the MQ-510 sensor with electronic lights that is stored in the firmware of the meter. Calibration with electronic lighting makes it the perfect PAR meter for any type of aquarium lighting. The sensor has a housing designed to be fully weather-proof and self-cleaning allowing years of service with minimal maintenance.


No more days of looking and guessing how much light is being put into your tank. Apogee is the leader in radiation sensing devices and recently introduced the MQ-510 USB Powered Quantum PAR Sensor that now corrects for underwater variables. PAR (photosynthetic active radiation) is the easiest way to measure the available light for corals to consume and use for photosynthesis. With LED lights giving more and more control to the consumer the best thing is a PAR meter that is affordable and simple to use. With PAR readings you can monitor light degradation, clarity of the water, and intensity of the lighting schedule. Most LED lights out on the market today have more power than what your corals can take and will quickly bleach out from too much light. By having a PAR meter to monitor the light intensity you will have tangible numbers to go off of, instead of just guessing.


We personally like inputting all of our reading into a spreadsheet to make a chart of light output and overlay the readings on a photo as well. Having a picture with your tanks PAR levels is very handy to have when placing new corals in your tank.


  • Resolution - 0 to 4000 μmol m-2s-1
  • Calibration Uncertainty - ± 5 %
  • Measurement Repeatability - less than 0.5 %
  • Response Time - less than 1ms
  • Field of View - 180°
  • Spectral Range - 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50% of maximum)
  • Sensor Dimensions - 2.4 cm diameter and 3.7 cm height
  • USB Cable - 2 m (6 ft)
  • Warranty - 4 years


What's Included?

1x Apogee MQ-510 PAR Meter and Sensor


MQ-510  Spec Sheet MQ-510 Spec Sheet


MQ-510 Owners Manual MQ-510 Owners Manual


Open Box Apogee MQ-510 PAR Meter Return Policy

We (Bulk Reef Supply) accept returns on used, but functional PAR Meters for 60 days from the date of purchase. PAR Meters must be returned with all accessories included. A $100.00 restocking fee will be applied to all Apogee MQ-510 PAR Meters. Return shipping is not included and shipping charges are not refundable. 

More Information
UPC 850034933054

MQ-510  Spec Sheet MQ-510 Spec Sheet


MQ-510 Owners Manual MQ-510 Owners Manual

Write Your Own Review
You're reviewing:MQ-510 Full Spectrum Underwater LED PAR Meter
Your Rating
Only registered users can write reviews. Please or

Product Questions

is this a new par meter or will i be receiving a used one
Question by: Greg Meadows on Feb 18, 2024, 11:14 AM
Hey there,
Thank you for reaching out to us. If purchasing you will receive a new meter. We do rent meters for testing witch is used in multiple tanks. Please let me know if you need anything further.
Answer by: Thomas Wofle (BRS Staff) on Feb 19, 2024, 8:52 AM
The owners manual states the value on the readout is in PPFD. I had never head of this term as it seems "PAR" is what everybody uses when discussing the needs of individual types of corals. Is this PPFD value the number I would use to tell what my PAR is? Also, the reading seems to fluctuate all over the place when my pumps are running due to the surface turbulence. Should I be taking my readings with the pumps off? TIA
Question by: Anthony Scaringella on Aug 16, 2022, 7:51 PM
Hello Anthony,
PPFD measures the amount of PAR light (photons) that arrive at the sensor's surface each given second. Essentially, they are one in the same. The measurement will bounce around if there is surface tension. Many prefer to turn the pumps off and take a measurement when the water is calm. You can also take several measurements with the pumps on and calculate the average PAR reading as ideally, there will be continual surface tension and the readings will have that fluctuation through any given day. Please let me know if there is anything else I can assist you with!
Answer by: Ash Hoglund (BRS Staff) on Aug 18, 2022, 3:30 PM
does the Apogee
MQ-510 Full Spectrum Underwater LED PAR Meter that you are selling come with the latest blue full spectrum sensor rather than the one shown?
Question by: Howard Lewis on Feb 5, 2020, 4:59 PM
Hey there,

Yes it will come with the most updated sensor which is the blue one.

Take care
Answer by: Thomas Billington on Feb 6, 2020, 1:39 PM
Hi, does the Apogee 510 PAR meter that you are selling come with the blue full spectrum sensor which appears to be their latest? The images shown reflect the older sensor.
Same question for the SQ520.

Thank You
Question by: Howard on Feb 1, 2020, 11:29 AM
Hey there,

It will come with the new sensor, we have not updated the picture since it changed.

Take care
Answer by: Thomas Billington on Feb 6, 2020, 9:54 AM
Apogee released an updated blue sensor for 2019. Are the meters shipping from BRS coming with the new blue sensors or still the old gold ones? Thanks
Question by: Matt on Nov 3, 2019, 9:06 AM
Hey there-

Great question! Our PAR rentals are utilizing the updated blue sensor.

Happy reefing! c:
Answer by: Brad Ohmann on Nov 3, 2019, 2:56 PM
I know this meter had some software issues when y'all tested with the li-core and seneye. Before I purchase, is this still an ongoing issue or has it been resolved? Thanks
Question by: Josh on Oct 24, 2017, 4:23 PM
Hi Josh, excellent question!
The MQ-510 and MQ-210 have both been calibrated for use underwater and have improved the response to blue light. The difference between the 2 is minimal with the 210 under-reporting the blue end of the spectrum while the 510 slightly over-reports the blue end. Both units should perform well in a typical aquarium application.
For more information check out their spec sheet
Answer by: Nick on Nov 10, 2017, 3:59 PM