10-08-2012, 03:51 AM #11
Seems like you're still severely understocked even with 6+ oscars, arowanas and clown loaches.
IMO, a common pleco is not enough to keep that tank clean.
I recommend you add 3 fire eels, a large school of bala sharks and maybe 1 or 2 pacus.
And no, you don't need a filter... what a silly idea.