The 6 month service kit comes with the following items:

-- 3 x Fluval Clean & Clear Cartridge (A499)
-- 3 x Fluval U4 Poly Carbon Cartridge (A492)
-- 1 x Fluval Cycle 250ml (A8349)
-- 1 x Set of 2 Bottle Brushes (AQBR03)
-- 1 x Fluval U4 Foam Pad (A488)
-- 1 x Fluval Biomax 170gm (A495)

The 12 month service kit comes with the following items:

-- 6 x Fluval Clean & Clear Cartridge (A499)
-- 6 x Fluval U4 Poly Carbon Cartridge (A492)
-- 1 x Fluval Cycle 250ml (A8349)
-- 1 x Set of 2 Bottle Brushes (AQBR03)
-- 1 x Fluval U4 Foam Pad (A488)
-- 1 x Fluval Biomax 170gm (A495)