Reducing diatomaceous algae in cichlid tanks

Olive nerite snail on silicon. Photo by author.

Is your tank overrun with diatomaceous algae, more commonly called brown algae? Or does your tank simply contain more of it than you would like? There are numerous factors that can contribute to an overabundance of this brown film. Mostly associated with newly set-up tanks, even established tanks are not immune. I know, because some of my tanks have brown algae even though the they’ve been established and running for years.

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