Hanna Marine Magnesium Handheld Colorimeter zoanthid 5–4 ft (45–120 cm) in

5–4 ft (45–120 cm) in length

it helps reduce nuisance algae growth

ultra-clear

BioCube Filter Cartridge

How it works:

Hanna Marine Magnesium Handheld Colorimeter zoanthid 5–4 ft (45–120 cm) inHanna Marine Magnesium Checker (HI783) The Hanna Marine Magnesium Checker (HI783) is a digital colorimeter designed to accurately measure magnesium levels in saltwater aquariums. It eliminates the guesswork of traditional color matching test kits by providing a fast, easy to read digital result, making it ideal for reef keepers who want consistent and reliable testing. Features: Digital magnesium testing for saltwater and reef aquariums Measurement