Heading out the door... quick answer is a 12 or 6.6G Edge. Or a Mr. Aqua which is taller than the 6.6 and shorter than the 12G
Also toying with the idea of derimming the 12G to make a shrimp tank, again just toying with the idea.
Also have a similar tank to the Mr Aqua 11.4 which is a low iron tank I broke out the bottom (accidently) to which will be a
SW when I repair it. I have the
SW nano in the 6.6 right now and plan to move it back to that.
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New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?

Start here - Aquarium Advice Article
https://www.aquariumadvice.com/guide...ater-aquarium/
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves