1. Hiki ke kanu piha ʻia nā lako, semi-kunu a kau ʻia paha ma luna o ka ʻili, ʻaʻole i hoʻonohonoho ʻia ma ke ʻano maʻamau a hoʻonohonoho ʻia e like me ka ʻāina.
2. ʻAʻole i uhi ʻia ka ʻāina i kanu ʻia o nā lako, a ʻaʻole hiki ke kūkulu ʻia ma luna o nā hale ʻōmaʻomaʻo, nā hale kaʻa a me nā keʻena insulation.
3. Hoʻohana ka micro-hole aeration i ka pipeline aeration i hana ʻia e German Otter System Engineering Co., Ltd. no ka hoʻouka ʻana i ka oxygen, ʻaʻole ke kāohi ʻana, kiʻekiʻe o ka hoʻouka ʻana i ka oxygen, hopena maikaʻi, mālama i ka ikehu a me ka mālama mana.