Ngo-Agasti, izinga lokukhula kwemboni yensimbi engezansi lehla, lithintekile ukukhula komkhiqizo wensimbi kanye nokuthuthukiswa kokuhweba, amanani ensimbi ehla inyanga nenyanga. Kuze kube nguSepthemba, njengoba intengo kaphethiloli eluhlaza ikhuphuka, amanani ensimbi ebuyele esimweni sawo, kulindeleke ukuthi aphuze kusazobonisa ukuthambekela okuncane kokuguquguquka.