This link shows it is a lot like my Hovabator 1588. If you did not get this bottom with the water reservoirs in it, you need to contact GQF or whoever you bought it from.
https://www.gqfmfg.com/pdf/Thermal Hova-Bator instructions.pdf
https://www.gqfmfg.com/pdf/Thermal Hova-Bator instructions.pdf
