[Our fish egg hatching kit contains]a set of cichlid fish egg incubator, a set of aquarium Fish Breeding Box, an aquarium air pump, a small bubble stone, an aquarium control valve, two hoses, a small fish catching net, and one Aquatic tweezers [Fish egg incubator uasage instruction]Our fish egg incubator is made of high-quality acrylic and PMC material. It is detachable and easy to clean after use. The cichlid fish egg incubator is equipped with four powerful aquarium suckers, which can be firmly installed on the inner wall of the fish tank. There is a black biochemical filter at the bottom of the fish egg incubator, which can isolate the impurities in the fish tank. [How to install fish incubator and air pump]After the fish egg incubator is installed according to the instructions in the manual, make it be sucked on the inner wall of the fish tank glass then connect the aquarium air pump to the bubble stone, and put air stone into the upper part of the incubator. Remember to open the fine-tuning valve to let the air stone to bubble in order to let water flow in the incubator. Please refer to the manual for the specific installation method.