TET16787:  9 watt UV bulb for Pressure Filter 
TET16785 Replacement Pads

XTET16786: Foam 2/blocks for Pressure filters 
XTET26581:  CONVERSION KIT 1500-MODELS - Converts TetraPond Clearchoice 1500 External Pressurized Pond Filters with Foam Pads to new Bio-Active design. Includes bio-activator media, center tube with vortex jets, strainer cage, screws and instructions. Works with model numbers 26553 & 26549

Note: If the Ballast is damaged, you must contact Tetra directly at UNITED AQUATICS 856-985-9339