i want to grow the juvenile arapaima with a jardini (in the 7feet by 2.5feet by 3feet tank) or sum sort of other arowana that i also intend to put in my pond. will it work? what are your thoughts and views? keeping in mind that the 7 foot tank is only a 'grow out' tank. i have a pond but there are 3 foot RTC, tiger shovelnose and clown knifes in there....the tank is custom made with reinforced glass and is framed with cement. very strong structure.