Kua riro te rōrahi whero hei huringa kē i te ao āhua nāna i te mea he momo rongoā e mahi ana i runga i te kiri me te kore pānga. He maha ngā āhuatanga hei whakaaroaro i te wā e hoko ana i tētahi taputapu āhua rōrahi whero, pērā i te ngaru, te wāhi e hiahia ana ki te rongoā, me te kawe i te taputapu. Ko ngā taputapu e whakaputa ana i ngā ngaru 600-650nm, 800-850nm he pai mō te kiri, nāna i te mea ka hōhonu te pā ki ngā ngaru nei ka whakatairanga i te rongoā me te whakatika i ngā pūtau kua pāngia. Anō, ko te whakamahi i tētahi taputapu e hāngai ana ki tō āhua noho – hei tauira, he taputapu kawe mō te rongoā i te wāhi takitahi, i tetahi rārangi katoa mō ngā wāhi nui – ka whakapai i tō wheako me ngā hua.