Efektifitas Sistem Akuaponik dalam Mereduksi Konsentrasi Amonia pada Sistem Budidaya Ikan
Abstract
Kualitas air memegang peranan penting dalam bidang perikanan terutama untuk kegiatan budidaya serta produktifitas hewan akuatik. Limbah yang dihasilkan dari proses budidaya memiliki dampak negatif bagi hewan akuatik. Amonia merupakan salah satu limbah yang berasal dari sisa metabolisme ikan yang terlarut dalam air berupa feses dan sisa makanan ikan yang tidak termakan dan mengendap di dasar kolam budidaya. Penelitian ini bertujuan untuk mengetahui efektifitas sistem akuaponik dalam mereduksi kadar amonia serta mengetahui jumlah kepadatan optimal tanaman pada sistem akuaponik dalam menyerap kadar amonia. Penelitian dilaksanakan selama 60 hari pada Juli-September 2013 bertempat di Laboratorium Budidaya Perikanan Universitas Lampung. Perlakuan penelitian menggunakan kangkung (Ipomoea aquatica) 10 batang, 20 batang, 30 batang per rumpun dan tidak menggunakan tanaman. Pengurangan amonia oleh tanaman air digunakan untuk pertumbuhan yang diserap melalui jaringan akar. Semakin banyak tanaman air makin efektif dalam mereduksi amonia. Penggunaan 30 batang per rumpun kangkung dapat mengurangi amonia hingga 58,57mg/l.
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