I've read all the thread and I am sorry for your loss man. Get the pims back, they are wicked looking catfish, but at the same time, set up a few 33gal setups as growouts for the silvers.
In that size of a tank you could easily do a community tank and the sooner you get them the better. Once they grow out then it's harder to introduce new aros in the tank.
May I suggest rays and some other moster catfish as tankmates?!?
QUOTE(gator @ Dec 21 2007, 10:04 PM)

Just bought 4 - 2.5"-3.5" Silver Arowanas for my 600G (96x48x30) Cute little suckers. I was told they were eating flake at the LFS but when I tried to feed them at home they ignored the flake so I chopped up some of my Cichlid sticks and they attacked them

I'll post a few pics when the lighting comes on tomorrow. Any tips from current Aro owners would be greatly appreciated.

That's on sweet tank, 1' wider and 3" higher than my 400gal, but what a difference in the water volume

My 400
http://ca.youtube.com/watch?v=y0crm4kBowcQUOTE(Chubbs @ Dec 22 2007, 09:37 AM)

Convicts are a good choice for feeders. They breed and grow fast. The only thing I see is that you will need more than one tank to breed them. I would have at least 3 to deal with their various needs as they grow to feeder size.
As far as the trout pellets are concerned, I think the operative word there is Trout. It may be ok, and not harm them but as far as nutritional value, I would do a lot of comparing to the pellets you use now and see what the difference is. I personally wouldn't use them, but that's me, and it doesn't mean that it's a horrible idea. I just don't know what's made of.
Preferably 33gals, because you pretty much want to raise healthy fry for feeders and ensure your aros are getting very good food. In a setup that is too small the bioload would be too much and you'd either end up having a lot of deaths, or not decent enough growth rate for the fry.