*Product May Be Subject To Extended Lead Times. Ideal for larger ponds ranging from 12,000 to 30,000 litres, the UltraZap Combibox 2 offers robust mechanical filtration with a 3-bag sand filter (excluding sand) and a 30W UV clarifier to control algae growth. Powered by a 0.6kW pump, this system ensures efficient water flow. Note: This combo excludes a biological filter, allowing customization based on specific pond requirements.