"Product description Size: inner diameter 46mm, total height 285mm Colour: Black material: plastic Package content: 1pcs shrimp egg incubator 1.Easy to useSimple operation, practical and convenient, shrimp incubation and feed and view baby fish. 2.FunctionFacilitate hatching brine shrimp eggs and feed the larvae of ornamental fish. 3.Simple installationIt can be installed in the aquarium and incubated at the constant temperature of the aquarium. 4.High quality materialNontoxic and harmless material, safe for your baby fishes and shrimps. Made of high quality plastic material, sturdy, durable and long service life. 5.More Hatching TipsPH is important in hatching brine shrimp. A starting pH of 8.0 or higher is recommended.Tanks and brine shrimp hatching equipment should be cleaned and disinfected routinely."