Ikaners,
Mau tanya buat peternak or yg punya kolam or aquarium quantity dalam
jumlah banyak.
Selama ini sisa dari kotoran ikan yang ada di filter2 diapain aja?
Bisakah dijadi-in pupuk? Apakah (maaf) tai ikan bisa digunakan kembali
menjadi pupuk? Or mungkin ada kegunaan lainnya?
Mohon input-nya.
Trims.
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