But then again aros grow larger than the rest of what we get here, henwards jardini was at a foot in about 4 months I'd say, and agro as. I sold my jardini as he was far too aggressive to keep with any other fish apart from bichirs. Jardini would be fine getting large in that tank, it's just with a full grown oscar/texas/JD/Jag/bichir/parrots etc you need to watch stocking density vs waste output.
And a heads up, larger aros are hard to move on. Even Jars.