Size: Small Pneumatic Model: 10.28.213.3 cm/4,023,235.24 inch; Middle Pneumatic Model: 14,58,514,5 cm/5,713,355,71 inches; Large Pneumatic Model: 18,5915.5 cm/7,283,546.1 inch. It is produced ly and ly to raise, isolate or accustom to the climate from a -ly transparent transparent acrylic, excellent workmanship. Reproduction for fry fish allows you to enjoy the fish fight and the nursery easily and clearly. . To isolate and protected by gentle fish, pregnant fish, shrimp aggressive fish and wounded fish, two isolated rooms of the small model and four isolated rooms of the medium/large model. Betta, Lepistes, Guppy and so on. A necessary separation for pregnant fish such as can prevent born pups from being eaten or being attacked and increasing the survival rate of young fish. This reproduction box for the bond tank comes with self -sufficient insulation rooms, can reduce the attack of aggressive fish, protect injured/weakened fish, small fish, shrimps and more, and prevent born pups and shrimps from escaping. The middle rooms are hatred for fry fish and the top or bottom can be used as usual as you want. Floating the suction caregiving that helps to be firmly fixed to the tank or aquarium. The appropriate side ventilation holes allow water flow and prevent small fish from escaping. The double layer combination gives more space for your tank or aquarium. It also allows you to connect an air pump to oxygenate water from the pump port on the side.