Neptune Systems

PMK PAR Monitoring Kit - Neptune Systems

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    Features and Benefits

    • Performs continuous light-level monitoring for your aquarium
    • Measures actual PAR – the light corals and plants use
    • Prevents burning out corals
    • Includes ASM – the new Advanced Sensors Module
    • PAR sensor hides nicely in aquarium inside Real Reef Rock
    • Fine tune your lighting to the needs of your aquarium


    Continuous light-level monitoring for your aquarium

    With the PAR Monitoring kit, you can monitor and log your aquarium’s light levels 24 hours a day! The perfect tool to fine-tune your lighting on your tank. Now you now can adjust your lights with the confidence of knowing you will not be giving too much or too little light to your corals and plants.

    Prevent Burning Out Corals!

    At certain parts of the spectrum, the human eye cannot perceive light intensity changes once the light level exceeds a certain point. Too often this causes people to adjust their LED lights far past the ideal PAR level for their corals or plants. This usually results in burning, bleaching and/or death. With the PMK you can adjust your lights while monitoring exactly what light is affecting your corals and plants throughout the day. Also, not all corals are alike. Each type of coral has its own range of light intensity that makes it happy or not. 

    Rugged Sensor Hides Inside Real Reef Rock

    Sensors and probes are great in our aquariums, we just don’t want to see them! That’s why we usually put them down below in the sump. Not possible here. Knowing this we had the guys at Real Reef Rock design a custom piece of rock to hide the sensor in your aquarium. Now you can monitor light 24/7 and never see the sensor!

    Measures Actual PAR – The Light Corals and Plants Use

    The Apex with the PMK measures actual PAR. PAR stands for Photosynthetically Active Radiation. This is the light from 400 to 700 nanometers that organisms are able to use for photosynthesis – this includes the zooxanthellae algae that lives inside your corals. Other measurements like LUX are not useful at all as they measure just the light visible to the human eye.

    24/7 Light Monitoring!

    Track your light levels over time. With the PMK you track and log PAR 24/7. Now you easily go back and look at how you had your lights running last week. Even better you can compare your light output across the day with others who use the PMK and then compare light schedules and LED settings.

    No more guesswork!

    If you control your lighting with the Apex, you are in for an added bonus. The lighting wizard in Apex Fusion shows you your previous days light level across the day superimposed with the light wizard graph. Up until now, you had to pretty much wing it when it came to making adjustments. Now you can easily make lighting changes and see the effects of those changes in one simple interface!  If you don’t have it already, this is one major reason to start controlling your lighting with the Apex. There are many Apex Ready light choices available. Some of the wireless lights like those from AquaIlluminations and EcoTech Marine even have their own Apex control modules (AWM and WXM).


    Includes the newly released Advanced Sensors (ASM) Module!

    More information will be released on this module in the future but in short, this new module allows for hundreds of different types of future Neptune Systems and current 3rd-party sensors to be connected to your Apex and have their data logged.


    Kit Includes:

    ASM – Advanced Sensors Module

    NPS – Neptune PAR Sensor

    Real Reef Rock

    6′ AquaBus Cable


    Neptune PMK Instructions

    More Information
    Product Name PMK PAR Monitoring Kit - Neptune Systems
    SKU 209193
    UPC 0748252989307
    Best Performer No
    Best Value No
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