The tank in question has been up for a few months but the media in the sumps been run for years. My only spare tank at the moment is a 500gallon I’m in the reverse problem to normal too much tank space haha yeah I was thinking silver dollars for there hardiness. I’ve tried frozen krill not blood worms yet I’ll grab some tomorrow with the dithers. I’ll have to water change tomorrow regardless the un eaten pellets have to be sucked out.Haha! That’s not a bad problem at all. Man I feel for you bro. Azuls here run $15-$50 depending on the season. How long have your tank been running/cycled? IMO and IME all my fishes have a better appetite after I do a W/C, the bigger the better. Straight out the hose, cold water and everything. I’d personally add SD (Silver Dollars) they, are aggressive eaters and shiny. They draw the Pbass attention, yet too big to be consumed. Also one of my favorite common fish that schools and hardy af.