5 KESIMPULAN DAN SARAN
5.1 Kesimpulan
5.1 Kesimpulan
Berdasarkan hasil penelitian dapat disimpulkan:
1. Pertumbuhan ikan lele pada media dengan dan tanpa ditambahkan unsur karbon adalah sama, tetapi jumlah bakteri heterotrof pada limbah budidaya yang diberi unsur karbon mencapai hingga 100 kali lebih besar daripada bakteri heterotrof pada limbah budidaya yang tidak diberi unsur karbon.
2. Nitrogen anorganik pada media dengan penambahan unsur karbon lebih rendah daripada nitrogen anorganik pada media tanpa penambahan unsur karbon sehingga kualitas air menjadi lebih baik.
3. Udang galah yang memanfaatkan bakteri heterotrof dari media budidaya ikan lele dengan penambahan unsur karbon tumbuh hampir sama cepat dengan udang galah yang diberi pellet pada tingkat kepadatan yang sama.
4. Sistem akuakultur berbasis trophic level melalui teknologi biofloc mengakibatkan peningkatan efisiensi nitrogen.
5. Penambahan unsur karbon pada limbah budidaya ikan lele menyebabkan ketersediaan bakteri heterotrof melimpah dan masih sangat banyak yang belum dimanfaatkan oleh udang galah.
5.2 Saran-saran
Dengan memaksimalkan pertumbuhan bakteri heterotrof, budidaya ikan lele dengan kepadatan 100 ekor/m3 sebaiknya dilakukan dengan sistem keramba dalam kolam bersama udang galah dengan kepadatan sampai 40 ekor/m2.
Perlu dilakukan penelitian lebih lanjut untuk memaksimalkan pemanfaatan bakteri heterotrof melalui peningkatan padat tebar udang galah dan suplai aerasi.
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