All Betta External Filter Media Betta 1050 Carbon Cartridge. Always use Genuine spare parts. MF649£5.99 Betta 1050 Filter Pad Set. Always use Genuine spare parts.£4.80 Betta 1050 UV Carbon Cartridge. Always use Genuine spare parts. MF658£5.69 Betta 1620 Filter Pad Set. Always use Genuine spare parts. MF647£5.99 Betta 1620 Replacement Carbon Cartridge. Always use Genuine spare parts. MF650£7.19 Betta 1620 UV Filter Pad Set. And always use Genuine spare parts.£5.99 Betta 1620 UV Replacement Carbon Cartridge. Always use Genuine spare parts.£7.19 Betta 2000 Filter Pad Set£7.19 Betta 2000 UV Filter Pad Set£7.19 Betta 2000 UV Replacement Carbon Cartridge. Always use Genuine spare parts.£7.99