Yeah but a 1.5m tree snake is very different to a 1.5m python. The other thing to remember is that these species really do like to be secure. Giving them too much room would mean you never see your snake out and about. Right now I'm watching mine hunting for a guppy. She is a subadult and in a 2x1.5x1.5 and she was perfectly happy in there with another subadult.
nah i just pump it all out and refill it every couple of weeks. when i do that, i throw a filter in there for an hour or two and bobs your uncle. Filter cleans out the displaced faeces and the fish get their water change. the guppies are going well in this setup, only the temps are a bit too high for breeding (which would be awesome if i wanted to reduce my feeding bill). snake eats predominantly guppies out of the water in the bottom of the enclosure but i occasionally throw in a small clear bowl with a couple of guppies/golfish to stimulate the hunting reflex. I get the impression that a few missed attempts in a larger water source puts them off trying again until they get one from a small bowl. I am thinking of a way to drop temps of the water by 4 degrees without affecting the temps of the enclosure as much in an attempt to both increase probability of guppy breeding and more importantly decrease risk of bacterial cultivation. might use a higher wattage basking lamp and not have it directly over the vine hide or another option is change the day/night from energy saver to another basking lamp for day temps.
