Eshopps PF-300 Overflow Box SPS Maintain magnesium between 1

Maintain magnesium between 1

Safe for fish when used according to label directions

Compact Eheim air pump with quiet operation

Filtration type: Floss pre-filter plus activated carbon

If more than one media bag is installed

Eshopps PF-300 Overflow Box SPS Maintain magnesium between 1Eshopps PF 300 Overflow Box Eshopps PF 300 Hang On Sump Overflow The Eshopps PF 300 Overflow Box provides a convenient way to connect a non drilled aquarium to an under cabinet sump, refugium or biological filter. Its hang on back design transfers aquarium water over the tank wall through a smoke coloured U tube, eliminating the need to drill the aquarium panel. Designed for aquariums up to 75 gallons with a maximum flow rate of 300 GPH, the PF 300