9 PL-S WATT UVC LAMP. For best results from your uv unit, a UVC Lamp Should Be Replaced Every 6-12 Months. This is a standard size 9 PL-S watt UV bulb with two pins at one end and will fit a range of units from many manufacturers inculding,Hozelock, Oase, Fish Mate, SuperFish and many more.
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