Red Sea Magnesium Pro - Reagent Refill Kit - R21416

Red Sea Magnesium Pro - Reagent Refill Kit - R21416

Marsoni

M251S

$19.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Red Sea Magnesium Pro - Reagent Refill Kit - R21416Red Sea's Magnesium Pro Test Kit is an advanced titration test, measuring the level of magnesium in your reef aquarium to an exceptionally high accuracy of 20 ppm. This test kit enables the accurate dosing of Red Sea's Reef Foundation C supplement (magnesium) which is part of the complete Red Sea Reef Care Program. Specifications: Test type: Titration Test range: Accuracy: 20 ppm Titrator included inside easy to use, single hand, high precision

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We offer a 30-day return/exchange service after receiving.
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I used to try out different brands and this is the one I've got to have for my face- safe on sensitive skin and just feels really nice and not greasy putting on, sometimes I get stuck borrowing so now I get a few and have them in various places. Also, I appreciate they don't change the packaging or add other versions so I can grab and always feels great and works on

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Reviewed in the United States on April 10, 2026

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JohnDoe

Battle Creek, US

★★★★★ 5

Works great but does not hold up to sweat

Size: 3 Fl Oz (Pack of 1), Style: SPF 50

Dissolves with intense exercise then burns eyes and makes a mess, but otherwise works great.

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Reviewed in the United States on April 24, 2026

Verified Purchase