Huh, that's interesting that keeping them in a pond may help to correct and/or prevent mild cases of drop eye. I was considering trying arowana again and keeping it in a pond once it outgrew its initial grow-out, so I guess that's good news for me.
Cool.. give it a shot ryan..
earth pond is the best cure for PLJ, DE, curling gills.
Keep it in a pond,BUT Genetics plays a big role in drop eye cases