Lokhu kuyi-12.5 amayintshi ubude obuqondile bong obunamakamelo amabili.Womabili amakamelo ane-percolator efanayo yesihlahla sezingalo eziyi-11.Kubukeka sengathi i-perc bong yesihlahla noma i-bong yokubamba umlotha ngoba awasekho amagumbi okuhlala intuthu.Ngakho-ke, kulula ukuthola ukushaya okushelelayo lapho izingalo eziningi ze-percolator yesihlahla zikhona futhi zifaka intuthu emaphashini ngokushesha okukhulu.I-tree perc iphoqa intuthu ukuthi igezwe ngamanzi ngokugcwele.Wonke ama-bong anezesekeli ezifanayo.
