Yogwira bwino ndi yopulumutsa mphamvu kugunda thumba fyuluta ndi chikwi mtundu fumbi zosefera chipangizo. Zomwe zimapangidwira ndikuti fumbi lomwe lili ndi mpweya likadutsa mubokosi lokhala ndi thumba la fyuluta, fumbi mkati mwake limatsekedwa ndi thumba la fyuluta ndikuyeretsedwa, ndipo fumbi limatulutsidwa pakati. Otolera fumbi la thumba ali ndi izi: Kuchotsa fumbi lamphamvu, kugwira bwino ntchito kwa fumbi labwino, kusinthasintha kwamphamvu, kutha kuthana ndi fumbi lamitundu yosiyanasiyana, komanso kusakhudzidwa ndi mawonekedwe afumbi. Pamene ndende ya fumbi mu mpweya wolowera amasintha kwambiri, sizimakhudza kuchotsedwa kwa fumbi, ndikuchotsa fumbi kopitilira 99%, ndipo kumatha kutulutsa mpweya wochepa kwambiri