Enkambisweni yokwenza umquba, izinhlobo ezimbili zama-microorganisms ziyasiza. Iqoqo lokuqala lama-microorganisms akhula phakathi kuka-20 kuya ku-35ºC abizwa ngokuthi ama-mesophiles. Ama-mesophiles enza ukuwohloka kokuqala futhi enza ukuqiniswa komquba esigabeni sokugcina senqubo.
Amagciwane e-mesophilic akhula futhi azalane ngokushesha, akhiqize ukushisa ngesikhathi sesigaba sokuqala, kanti, ngesikhathi sesigaba sokugcina sokuvundisa, asiza ekuvuthweni kwempahla ephilayo eyonakele.
Phakathi kwesigaba sokuqala nesokugcina sokwenza umquba, kunokwenyuka kwezinga lokushisa eliwumongo wengxube yokuvundisa, eyaziwa ngokuthi yisigaba se-thermophilic, lapho izinga lokushisa lingakhuphuka lifike ku-55 kuya ku-70ºC.
Lokhu kubangelwa ukukhiqizwa kokushisa okusheshayo esigabeni sokuqala sokwenza umquba. Ama-Thermophiles angakhula emazingeni okushisa aphezulu kangaka futhi asize ekwephuleni izinto eziphilayo eziyinkimbinkimbi.
Ukushisa okuphezulu kusiza ekubulaweni kwamagciwane nokhula. Ukuba ne-microbial ecosystem kuyisihluthulelo sokuqinisekisa ukuthi ukuvundisa kuwuhlelo olusebenzayo lokulawula udoti oqinile.