Magnetic Probe Rack - Neptune Systems

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Magnetic Probe Rack - Neptune Systems

100% Recommend this to a friend (44 of 44)

SKU: 208405
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Quick Overview

Neptune Systems designed the MPR - Magnetic Probe Rack specifically for the Apex. It will hold the larger diameter temperature probe, pH probe, ORP probe, and salinity probe.

  • Made from acrylic and with strong neodymium magnets

  • Works securely on sumps and aquariums up to 1/2" thick


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Product Questions

Can i get the complete dimensions. Need to know if this is going to fit in my biocube. I need the Length across and the width when the screws are clear of the holes. Thank you
Question by: Joseph on Jul 30, 2014 1:31:00 PM
Hi Joseph,
The inside portion of the probe holder measures 4" across. With the screws backed out as far as they go (so at its thickest) it measures 2.5" inches.
Answer by: Bulk Reef Supply on Jul 30, 2014 1:31:00 PM

Full Details

Neptune has designed a Magnetic probe rack that will hold up to 4 probes with one hole being slightly over-sized to hold those larger probes like the Neptune temp probe. By simply placing the MPR in your sump or tank, you can now securely hold all your probes in a single spot. If a probe is left loose their is a good chance it may float with the business end being exposed to the air and causing a false reading. The Neptune MPR can work with glass up to 1/2" thick and keep all your probes secure and safe.


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  • Nice Product. By Robert on 1/14/2016

    Pretty simple device that works as advertised. Strong magnet and well made.
  • Exactly what i wanted... By Jessica on 12/28/2015

    This item is perfect for what I wanted to help clean up my sump area and keep it looking good. The color scheme looks nice and is worth the money vs a DIY holder if you like a matching look. Nice strong magnet has no problem holding in place.
  • Excellent By William on 12/20/2015

    Fast shipment and a excellent product.
  • useful By Mike on 12/20/2015

    This is a nicely made, attractive product that works for its intended purpose. I like it as it let me position my alk and kalk dispensing tubes right in a good current so they don't precipitate out like they were in the sumps built in brackets.
  • Works Perfect By BH on 12/18/2015

    Works perfect with my Neptune probes and looks good too.
  • Very strong By MICHAEL on 12/14/2015

    Very strong magnets, the design and colors are awesome!
  • Works By Patrick on 12/14/2015

    It seems to work OK so far. A little big for a Biocube 29 though. It barely fits in the last compartment. You would have to cut the length of the screw down on one of the 4 spots to go around the return tube if you plan on using all 4. Luckily I'm only using 3 probes so I just turn one in all the way. Since the temp probe is so big they almost force you to buy this because other brands do not have big enough holes. This is really expensive for what it is and should be included with the Apex because of their huge temp probe design.
  • Works well and fits the oddly sized Neptune Temp Probe By MTWiley on 11/2/2015

    It was a bit pricey for what it does, but I couldn't find any other probe holders out there that looked like they'd have a big enough hole to hold the oddly large Apex temp probe.
  • Screws don't secure the probes By bl95 on 8/25/2015

    I was disappointed to find that the screws would not make enough contact with the holder in 3 of the 4 holes to secure the probes. They bob around making the holder almost useless. They are Apex probes going into the Apex probe holder. How does that happen? Apex offered to correct the problem, but it was hard to believe I had even had this issue.
  • Very Nice Product By Eagle1 on 8/5/2015

    Product works very well, magnet is strong, probes fit nicely, looks good as well, kinda pricey, my sump has holders made into it but the temp probe is too short to fit my sump.
  • Easy to use.... By Patrick on 7/15/2015

    What to say it holds probes well. The magnet is very strong and holds them in place. It looks nice and the screws hole well and have not stripped out even when tighten a lot. If you want something that looks nice and holds the probes get it.
  • required item By Joseph on 6/1/2015

    Well this product works great and after spending the kind of money necessary for the Apex Gold, what's just a little more money for a probe holder? I say that this product is practically required if you don't already have a method of securing the probes. They can't just float around. I give 4 stars only because for the price of the Apex Gold, I feel that the probe holder should be included.

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