Marine Magnesium Reagents HI783-25 Polyp Lab All of these elements are

All of these elements are associated with many biological functions

Minimum Tank Size 30 gal

2-4 Drips per second - for majority of other fish such as angels

Reversible Coloration - Black or white to display or help spotting pests in coral dips

Giving you the most vivid spectrum your tank has ever seen

Marine Magnesium Reagents HI783-25 Polyp Lab All of these elements areHI783 25 are high quality reagents for use with the Hanna HI783 Marine Magnesium Checker. 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