UJI KETAHANAN IKAN LELE TERHADAP KONSENTRASI LIMBAH CAIR TAHU YANG BERBEDA

Abstract

This study aims to determine the resistance of catfish to different concentrations of liquid waste based on the survival value of catfish for 72 hours of observation with the experimental research method using a completely randomized design with three treatments and three replications. Treatment A concentration of tofu liquid waste is 3%, treatment B has tofu liquid waste concentration is 5% and Treatment C has 7% tofu liquid waste concentration. The results of the analysis of variance showed that the Hi hypothesis was accepted, namely that different concentrations of tofu liquid waste had a very significant effect on the survival of catfish with the best survival rate in treatment A of 76.66% with a liquid waste level of 3% while higher levels of tofu waste would have a survival effect. which occurred in treatment B (tofu waste content 5%) with a survival rate of 44.33%) and the lowest survival rate in treatment C (tofu liquid waste 7%) with a survival rate of 26.67%. at the optimal limit for catfish, which is between 25.0 – 27.5oC. The pH value of water 5 is acidic, this pH value is below the optimal range for catfish. The results of the BOD measurement ranged from 278 – 624 mg/L, this value was above the optimal BOD range. The TDS value of 314 – 336 ppm is still within the tolerance limit of catfish.