Poultry, Fisheries & Wildlife Sciences
Open Access

Abstract

The Effect of N:P:K Ratio, Concentrations, and Adding Frequency of Media on the Growth of Three Marine Microalgae for Mass-Production

Meng-Chou Lee, Wei Qing Chloe Lung, Chen-Ya Chao, Zhen-Hao Liao, Han-Yang Yeh, Fan-Hua Nan*

Commercial media from the Hyponex series were shown to contribute different benefits to terrestrial plants with their differing N:P:K ratios. This study investigated the effects of different media N:P:K ratio, media concentrations, and re-supplementation frequencies on the growth of Isochrysis galbana, Nannochloropsis oculata, and Tetraselmis chui. Of the five types of media, H5 (N:P:K=3:1:1) performed the best when each medium was added at 10 mg l^-1. H5 medium provided at 50 mg l^-1, 100 mg l^-1, and 100 mg l^-1 allowed for the optimal growth of I. galbana, N. oculata, and T. chui, respectively. When there were re-supplementations of 50 mg l^-1 H5 medium during a 14-day cultivation period, re-supplementation only on day 8 was optimal for I. galbana, while re-supplementation every four days was optimal for N. oculata and T. chui. In conclusion, when provided at a suitable concentration and frequency, H5 (N:P:K=3:1:1) is a promising medium for the mass cultivation of all three species.

Published Date: 2025-01-20; Received Date: 2023-06-13