Fluval Multi-Chamber Holding & Breeding Box The Fluval Multi-Chamber Holding & Breeding Box is an external hang-on aquarium box designed for breeding, isolating, acclimating, or temporarily holding fish and shrimp while keeping them connected to the main aquarium water system. Multi-Chamber Breeding and Holding Box Can be configured as 1, 2, or 3 separate compartments. Ideal for protecting newborn fry from adult fish. Useful for isolating weak, injured, or newly introduced fish. Helps acclimate new livestock while aquarium water circulates through the box. Hangs on the outside of the aquarium for easy viewing and maintenance. Warm oxygenated aquarium water circulates through the box when used with an air pump, sold separately. No separate heater or filter is required when properly connected to the main aquarium. Fluval Breeding Box Details Item number: 10943 UPC: 015561109437 Tool type: external holding, breeding, isolation, and acclimation box Compartment setup: 1, 2, or 3 chambers Mounting style: hangs on aquarium exterior Use: freshwater and saltwater aquarium livestock holding when suitable for the species Official Fluval Breeding Box Video Using the Fluval Multi-Chamber Box Hang the box securely on the aquarium, configure the compartments as needed, and connect an air pump to circulate aquarium water through the box. Monitor livestock closely and clean the box regularly to keep water movement steady.