Litaelo tsa tšebeliso:
1. Hlatsoa ka metsi a tanka ea pele pele u sebelisoa.
2. Ho kgothaletswa ho sebelisa hammoho le libaktheria tsa nitrifying ha tanka e ncha e buloa, e leng ho loketseng ho potlakela ho theha tsamaiso e phethahetseng ea libaktheria tsa nitrifying.
3.E ka sebelisoa ka tanka e ka tlase ea sefa kapa tanka e ka holimo ea sefe.Likhoeli tse ling le tse ling tse 3-6, e ka hlatsuoa habonolo ka ea pelemetsi a tanka.