So to bring it full circle, what I ended up doing was removing the the red devil and bleekeri. They now share a 35gal. with a divider in the middle. The argentea, convict, dempsey, 4 silver dollars, and pleco now house the 75 gal. (48x21x18)
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I slightly adjusted the layout of the tank but the argentea his reclaiming his corner
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Looks great!







