This 13w bulb has a unique 'double fin' appearance at the base of the bulb and is suitable for the Fishmate 15000 Pressure Filter. It is aldo used in Hozelock Bioforce 12000 produced before mid 2012 serial number 16 09 30 or lower .
If you have a broken base there is no need to buy a complete new unit. Simply purchase this Base section and it will fit onto your existing pond skimmer.
