Chii chinonzi kupamba?
Kuti unzwisise kumhanyira kubhengi unofanira kutanga wanzwisisa kuti bhangi rinoshanda sei. Mabhangi anogamuchira deposits kubva kuvashandisi uye anobvumirana kudzorera deposits panguva ipi neipi. Zvisinei, panzvimbo pokubhadharisa mari yokuchengeta mari yacho, mabhengi anowana purofiti nokuisa mari yacho mubhangi, zvimwe nokuikweretesa kumabhizimisi anoda zvikwereti kana kuti nokutenga zvinhu zvakachengeteka zvokuisa mari mazviri zvakadai sezvikwereti zvehurumende.  Chinetso ndechokuti mari idzi dzinowanzova dzisina mari yakawanda. Saka kana mutengi akangoerekana akumbira kuti mari yake idzoke, bhangi harigoni kubva ratengesa mari yaro kuti rimupe mari yacho. Kuti vadzivise izvi, mabhangi anochengeta mari yakawanda kuti abhadhare mari zuva nezuva.  Zvisinei, kana mutengi mumwe nomumwe achida kubvisa mari yake panguva imwe chete, bhangi harina mari yakakwana yokupa mutengi mumwe nomumwe. Uku ndiko kumhanyira kubhengi.