Yes, after looking at options without, and the pump "add-on" it cost more. The pump is a peristaltic that uses fragile rubber tubing. Keep it clean and treat it gently or it will rupture. It is also self-priming and Brinsea said even up-hill, and is inactive until it reaches temperature, so about an hour after you switch it on it is "at condition". Use DISTILLED WATER, it took about a quart for a hatch cycle.Mam, the Brinsea EX models have humidity control, one more thing you that is handled for you, my two cents worth.
Note I also have a battery back-up for the incubators (I life rural) and it has been effective during tests and real power failures. It was less than $50.tion!![]()
All being said, if you are homebound, perhaps you can tend the system manually as far as humidity goes, save a few bucks you know? It works for folks.