3x swai get an upgrade from 4500 gal to 25K gal. I am concerned about the rubber liner. I am also concerned about the paroons, arapaima, RTC etc. large mouth predators and opportunists but Josh of the OFR says they keep their IDSs with the biggest fish in their 58K and they swim with their paroons, just have to keep the paroons fed.
In a smaller tank like the 4500 gal homing IDS with RTC and paroons would be a bad idea, which was why we kept them always separate.