Red Sea Magnesium Pro Reagent Refill Kit

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Red Sea Magnesium Pro Reagent Refill Kit

100% Recommend this to a friend (12 of 12)

SKU: 207083

reg. $16.99

Special Price: $12.28

In Stock: 159
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Quick Overview

Reagent refill for Red Sea Magnesium Pro Test Kit. Enough reagent for 75 tests. Red Sea reagent refills make this line of test kits one of the most affordable high quality test kits available.

Full Details

Reagent refill for Red Sea Magnesium Pro Test Kit. Enough reagent for 75 tests. Red Sea reagent refills make this line of test kits one of the most affordable high quality test kits available.


12 Items

  • Love being able to refill By Eric on 9/15/2017

    Great to be able to just refill and not have to buy the whole kit. Cheaper in the long run.
  • Works fine, refill cheaper than buying another kit By Eric on 4/28/2017

    Good test, nice to be able to just buy the reagent and not a whole new kit.
  • Excellent By Aquatics 25 on 3/27/2016

    Very noticeable change color, no guessing. Love I only have to buy refills.
  • Red Sea accuracy By JT on 2/9/2016

    Like this kit for its accuracy and like the refill kits instead of having to buy a whole new kit.
  • red sea magnesium pro test kit By Chuck on 9/29/2015

    I really like using this kit. It is a lot easier than the other one I used.
  • Nice option By jarrod0987 on 7/28/2015

    I like the test and I love that you can refill it. That makes it much cheaper to test.
  • I'm happy with it. By Dave on 6/19/2015

    The color changes abruptly, enabling you to make accurate measurements.
  • Very Pleased By juschillin2 on 6/7/2015

    I have been using this product for almost a year now. I have used others, but this is the most accurate. My tank and I depend on it!
    It is especially nice that you can get the regent refills instead of having to purchase a whole new kit! Remember to rotate your componants to use older first.
  • Best MG test kit. By Brian on 3/30/2015

    The Red Sea MG test kit is the best on the market. You can't beat the accuracy nor the price for the refills.
  • The best mg test kit out there By David on 10/25/2013

    By far the most accurate mg test kit on the market for hobbiest use.
  • it's all about timing By Ryan on 8/22/2013

    you have to follow the directions exactly in order for it to work. Add a drop then swish for 15 seconds then add the next, repeat 5 times.
  • Great price By Miguel on 4/23/2012

    Love this product..was affraid of having to pay so much juay for refills, but then I saw thier prices...great!


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Product Questions

If I already bought one of the red sea pro kits (calcium). Could I just buy these refills for Magnesium and alkalinity and have everything I need to do all 3 tests? (besides the extra test vials, I have plenty of those from my marine care kit.)
Question by: Ricky Angus on Jun 27, 2016 10:00:00 PM
Hey there! Essentially, yes you could just order the reagents. :-)
Answer by: Randy (Admin) on Jul 1, 2016 11:49:00 AM
I'm curious, I bought this refill kit to replace the one from the reef foundation kit (cal,alk,mag) and the bottles for A and B chemicals are larger in the refill. Does this just mean I can do more tests off the refill vs from the reef foundation kit, or are the instructions different. The refill didn't come with instructions, plus when I did the test with the foundation kit I was getting 1440~ now i get about 1280 only a few days later with the refill. I did the tests twice sometimes with the old kit thinking it was wrong and would always get 1400+
Question by: Daniel on Jul 9, 2016 11:18:00 AM
Hi Daniel
The reagent is identical to what you received in your Reef Foundation kit, it is just a larger volume to allow for more tests. Most likely the reagents you may have had were getting old and possibly slightly contaminated from air contact. If you have another test kit or LFS to give you a second opinion on the different readings that would be preferred to know which result is accurate. However with magnesium in the range of 1280 – 1400 is totally fine and no ill effects should be noticed in the aquarium.
If you feel that something is not right with the reagent refill, just reach out to us at or 763-432-9691 and we would be more than happy to help you out.
Answer by: Charlie (Admin) on Jul 11, 2016 12:13:00 PM