LAJU PERTUMBUHAN Chaetoceros sp. PADA PEMELIHARAAN DENGAN PENGARUH WARNA CAHAYA LAMPU YANG BERBEDA

Abstract

Chaetoceros sp. is a natural food that is widely used in fish and shrimp hatchery units because it has a fairly high protein content. One of the problems that often occurs lately is the difficulty of producing Chaetoceros sp. in large quantities due to production instability caused by the quality and quantity of Chaetoceros sp. which is not the same for each culture period. This study aims to determine the best color of light on the growth rate of Chaetoceros sp. The study was conducted with four white light, green, red, blue and yellow light treatments, each of which was repeated three times. The results showed that white light treatment produced the highest population density of 9,17 × cells / ml. then the yellow light treatment is 8,5 × cells / ml, then the blue light treatment is 5,33 × cells / ml, the red light treatment is 5 × cell / ml, and finally the light treatment of green is 4,67 × cells / ml. Based on the results of this study, it is recommended for the cultivation of Chaetoceros sp. to increase the optimum growth rate is white light.