Hey MFK, i wanted to ask your experienced opinions on how a new arowana would fair with a pair of oscars and a jag. Ive done a ton of research on the silver arowana and I understand water and tank needs and requirements. Ive seen videos on youtube with aros, Os, and jags. they seemed to do fine. The tank i currently am housing my babies in is a standard 125 gal, with a fluval 405 canister filter with a biowheel filter of adequite size en route. but until it gets here i am using a over the top hanging 50 gal filter. Currently doing 33% water changes every 3 weeks - 1 month. Wondering how long my 125gal will house the aro in, taking into consideration an average to above average growth rate. Thanks