PERBANDINGAN EFEKTIFITAS DAYA SERAP PADA TANAMAN BAYAM MERAH (Alternantheraficoide), PAKCOY (Brassica rapaL.) DAN SELADA AIR (Nasturtium officinale) SISTEM AKUAPONIKTERHADAP TINGKAT KELANGSUNGAN HIDUP DAN LAJU PERTUMBUHAN IKAN LELE DUMBO (Clariassp.) INTENSIF. = COMPARISON OF EFFECTIVITY OF ABSORBENT IN RED SPINACH (Alternanthera ficoide), PAKCOY (Brassica rapa L.) AND LETTUCE (Nasturtium officinale) IAPONIC SYSTEM TO SURVIVAL RATE AND GROWH OF CATFISH LEVEL DUMBO (Clarias sp.) INTENSIVE - YESSICA SWASTIKA, 141311133083 (2018)