The standard Ova Easy 190 and 380 Advance egg incubators provide a continuous readout of incubation humidity to achieve the ideal average level. The humidity pump effectively maintains the humidity level precisely at the level the user sets irrespective of changes in room humidity and overcomes problems that can commonly lead to eggs failing hatch, especially in the largest stages of incubation. The humidity pump includes an external water reservoir eliminating the chances of water in the incubator harboring bacteria. The humidity pump module is designed to work seamlessly with the Ova Easy Advance incubators. Installation is a simple plug-in.