*Product May Be Subject To Extended Lead Times. The UltraZap Combibox 3 is tailored for ponds between 6,000 and 10,000 litres. It combines a 15W UV clarifier, a single-bag sand filter (excluding sand), a 15L biofilter with bioballs, and a 0.6kW pump. This compact system provides effective mechanical, biological, and UV filtration, ensuring optimal water clarity and quality.