Eheim reeflex UV Steraliser UVC Bulb for 350, 500 or 800 Clarifiers & Biological Additives The Marine Hydrometer takes a

The Marine Hydrometer takes a true water sample at 15cm depth

The filter provides the option of setting the flow output in 3 different positions

Central overflow with surface and bottom suction up to about 1

and nitrate – to keep reef inhabitants healthy

Eheim reeflex UV Steraliser UVC Bulb for 350, 500 or 800 Clarifiers & Biological Additives The Marine Hydrometer takes aReplacement UV C Bulb for Eheim reeflex UV Steralisers 350, 500 or 800. The EHEIM reeflexUV clarifiers use UV C radiation to clean aquarium water in fresh and sea water aquariums and are operated in the filter system's water cycle (discharge side) or by using a separate circulation pump (not included). Please check your Reeflex Unit prior to purchasing to see which bulb type it takes, 2 or 4 prong. Aquarium water permanently flows through a glass tube