heres another of my pondish nightmares i got all the pond liner out of my other pond and stuck in this and yet to be filled hopefully in the next few dayes its kinda an old tank i cut a bit out of the top think but not the whole bit too cut down on evap its 4300 litres radius 105cm hight 125cm im thinking im gunna put a murray cod in there cuz theyre awesome but i will see any suggestions?