Hanna Marine Magnesium Pocket Checker Powered Filter and vitamins

and vitamins

a pump will continue to run without producing flow

corals sometimes die for unknown reasons

No need to remove the base every time and even open the top door

Hanna Marine Magnesium Pocket Checker Powered Filter and vitaminsHI783 Hanna Marine Magnesium handheld pocket checker is designed to determine the concentration of magnesium in saltwater aquariums. It features a single button operation system and is easy to use. The large LCD is easy to read and the auto shut off feature assures the battery will not be drained. SpecificationsRange 1000 to 1800 ppm MagnesiumResolution 5 ppmAccuracy 5% of reading @ 25 C (77 F)Light source Light Emitting Diode @ 610 nmLight detector