okay.. i got a situation the rd seems to go after the jardini now.. every here and there.. and this is the biggiest tank i have right now.. my question is.. should i buy another arowana to even it out so the odds are in favour.. of the aro... or.. just get some cheap community.. fishs like silver dollar..and pleco and what not.. so he doesnt go after the jardini ORRRR just go crazy and put plants all over and rocks for hiding