Marine Magnesium Checker HC HI783 (Saltwater) Frank's Tanks If you just need to

If you just need to replace your worn out probe or add another you will not be disappointed with the double junction feature of these probes

The HMS Multi Light Mounting System is composed of three individual components that let you customize the mounting system for your exact tank and number of Hydra LED modules

but NEVER less than 3 Medium Berghia

Keep in small groups

Marine Magnesium Checker HC HI783 (Saltwater) Frank's Tanks If you just need toThe testing process is the same as Alkalinity HI772 with one second liquid reagent. The HI783 Marine Magnesium Checker HC is a handheld colorimeter that uses the Beer Lambert principle to determine the concentration of magnesium colorimetrically. The HI783 is designed specifically to measure magnesium levels in a saltwater aquarium or in marine biology applications. The 1000 to 1800 ppm range is ideal for coral fish or fish only aquarium maintenance.