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I wouldn't put on in less than a 84'' long by 36'' wide. They have the possibilty of reaching 18'' in length. Hard to turn a semi around in a small cul-de-sac.
I know 2 people who had Naso's. 1 had it in a 220 and it outgrew it in 2 yrs, the other was in a 240 and it outgrew that tank too. I would say a min of 300g.