you might be able to get the aro to 1ft. in the 55 gallon, maybe a touch longer.. but anything after that you're risking deformation or growth stunting.. and even then he won't be big enough to defend himself from the other aro in the big tank.. you're going to end up with a 6 or 7 ft long 100 or 110 gallon tank for him to grow in. and it's far easier to do it now, moving aros when they are tweenagers is tough at best. they get very skittish right around 1ft. can EASILY hurt themselves inspite of your best intentions.
Aro in a 55?
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you can wait until his 13 or 14" before you transfer him.I've seen a 3ft aro that is kept in a 60gal tank for 7 years sooooooooooo maybe keeping him in a 50 wouldn't stop his growth.It's just what I've seen but I wouldn't do it to my aro, as a fish hobbyist, I must prior the comfort of my fishes before I take them...sooo....maybe your 225 would be enough for your aro ALONE, if you can afford 300-400 then do so. Ignore those who says 400gal for 1 silver aro alone because they can't even keep their aro alone in a 400 gal.
Can anyone tell me what would be the recomended size of the tank for a 1.5feet grown pearl arowana? I have kept it in a 90 gallon tank. i feel it is not enough. so pl let me know
Thanks in advance
Thanks in advance
How many water changes do you want to do?
See how many nitrates he produces in a week, every week. If it's at 20ppm you should probably change the water once a week, eventually needing back to back changes as it creeps. If it's more than 20ppm in a week you need to do more than one change per week. 20ppm is on the conservative side, I know. Some people here will recommend 40ppm.
What it'll come down to is how much work you're willing to do to keep your parameters in check. It's nitrates and bad water that stunts a fish, not physical tank size.
See how many nitrates he produces in a week, every week. If it's at 20ppm you should probably change the water once a week, eventually needing back to back changes as it creeps. If it's more than 20ppm in a week you need to do more than one change per week. 20ppm is on the conservative side, I know. Some people here will recommend 40ppm.
What it'll come down to is how much work you're willing to do to keep your parameters in check. It's nitrates and bad water that stunts a fish, not physical tank size.
