JBL BabyHome ProAir (Breeding Box)Protection against large fish: spawning box for viviparous aquarium fish; isolation tank for sick or aggressive fish. 3 functions: single spawning box, double spawning box or breeding box. Effective intended for the use of an air stone: When using an air stone inside the spawning box the oxygen content rises, which dramatically reduces the risk of a fungal infection of the spawn. Simple installation: attachment of the spawning box with suction cups at