ethnics;724632; said:i think he'd be good up to about 2ft in the 400, so maybe around 2 years before i needed to have nice size setup for him? i wanna do a huge concrete block tank like u john but maybe on a scale of 2500 for just the 1 arapaima. or maybe 3k or 4k
If john's correct at the 2" per month then you'd have about a year. Normally with any other fish I'd say sure buy/build another tank later. But with this fish I'd at least have something in construction when buying one.