What black substrate is geopahgus and corydora safe?
This may be a very basic question, but does any one know of a black substrate/sand that is safe for corydoras and geophagus? I just purchased some dwarf acara's that need a darker substrate then the light brown sand I have to color up.
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Really helpful, thank you! I ordered the estees black sand off Amazon, I’ll let you know how it is.