Akwatin akwatin buga takarda daidaitaccen ruwa, yana nufin a cikin yanayin da ke kewaye da yanayin zafin jiki da zafi mara kyau, ruwan da ke kewaye da takarda yana da kyau, kawai lokacin da yanayin da ke kewaye ya sami babban canji, ruwan da ke kewaye da takarda yana da babban canji, kuma zai iya rasa daidaitaccen yanayin. Akwatin akwatin idan ruwa ya rasa daidaito, takarda na iya samar da launuka, don haka zai haifar da babbar cutarwa ga kyakkyawan akwatin akwatin da aka buga.

A gaskiya, daidaitaccen ruwa na takarda shine daya daga cikin daidaitaccen ruwa mai ƙarfi, wato, a wannan lokacin, saurin shan ruwa na takarda daidai da saurin dehumidification. Mudin zafi da zafi na kewaye ya canza, daidaitaccen ruwa na takarda kuma ya canza, bayan wani lokaci na absorbing ko dehumidification, a karkashin sabon yanayi, an kafa sabon daidaitaccen ruwa.