Randy Holmes-Farley
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My Tank Thread
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I cannot say with certainty, but I expect erythromycin should be considered unnatural in the ocean since I doubt it is made by marine bacteria in amounts sufficient to have an antimicrobial effect. Too much rapid dilution to make it a good plan, IMO.It's an interesting question. For example - One would normally classify a product such as chemiclean as 'not natural' - (assuming it contains some version of erythromycin). However - Erythromycin was originally isolated from soil in the phillipines, produced by bacteria. So - are there some local bacteria in some tanks/the ocean that produce erythromycin (which works well in alkaline environments) that helps limit cyanobacteria in nature? IDK.
I certainly could be wrong on that, however.