Fluval Multi-Chamber Holding & Breeding BoxEasily attaching to the side of most aquariums up to 1 thick, the Multi Chamber Holding & Breeding Box provides up to 3 separate housing compartments for protecting fry, sick weak or new fish that require acclimation Features: Multi functional breeder box allows for 1, 2 or 3 separate housing compartments Ideal as a hatchery and incubator to help protect new born fry from being eaten (improves survival rate) Provides a safe haven for injured or weak