Hey people this tank as above is advertised locally to me...
The filtration is described as follows:
72x18x21 marine/ tropical/coldwater tank approx 1oo.gals 4ft trickle filter tank in cabinet inc lighting sump pump heaters an uv sterlizer +fluvel 203 canister filter.
It was used for saltwater setup before the guy got sick so now keeping fancy goldfish (feeders in waiting)
What will need changing for it to be a tropical setup? Other then sterilizing it all etc?