Hi all I am after some info on setting up a tank for a dwarf caiman

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Hi all I am after some info on setting up a tank for a dwarf caiman the tank the tank is in a (L) shape the water area is 6ft x 2ft x 3ft high and has a ramp in to the land area which is 2ft x 2ft x 3ft but will only hold 16” of water as I had a two sets of glass doors put in the front of it is the tank is all made out off 10mm plate glass I am trying to find the best way to filter the water and heat the tank when I had it made I had a drain tap drilled in to the bottom of one end .