Hanna Magnesium Checker Substrates & Decor Note the original tube routing

Note the original tube routing and retaining-clip positions

and colour-enhancing LED channels

hang-on-back filters

LED lamps: 2 x 12W

The Edge Max is built for larger aquariums and thicker glass or acrylic where a standard-size cleaner may not provide enough magnetic grip

Hanna Magnesium Checker Substrates & Decor Note the original tube routingHanna Magnesium Checker The Hanna Magnesium Checker HI783 is a marine handheld colorimeter designed to measure magnesium from 1000 to 1800 ppm in saltwater aquariums. It provides a digital magnesium result for reef keepers who want easier, more repeatable testing than traditional colour comparison or titration style magnesium kits. HI783 Marine Magnesium Testing Magnesium helps stabilize the relationship between calcium and alkalinity in reef