The oxygen content of sea water can be kept constant by use of antibiotics for periods up to more than a fortnight. With living animals present, the bacteriostatic effect probably lasts for a shorter time. Chloromycetin was the most effective antibiotic used; streptomycin was also satisfactory....
Marshall, S. M., and A. P. Orr. 1958. "Some uses of antbiotics in physiological experiments in sea water." Journal of Marine Research 17, (1). https://elischolar.library.yale.edu/journal_of_marine_research/925