He mea nui te whakarereketanga o te anga tank?
Ko te paheketanga o te anga taika ka pa ki te ahuatanga motuhake:
1, i roto i te take o te kore pānga i runga i te haumaru taraiwa, te rerenga wai ranei kahore he pānga, engari me pupuri i te tirotiro auau;
2, ki te he nui atu te kino o te tank wai "deformation", me whakakapi i te wa, kia kore ai e pa ki te ahua o te miihini;
3. Ko te tikanga, he anga taika wai. Mena na nga raruraru whakaurunga, nga aitua inihua ranei (mehemea), ka taea te tuku kia whakatikahia i te waa, ka whakatikahia, ka whakatikahia te puna wai.