hi, i have 38ltr tank and its half full, i have moved my fry so it just houses mts at the mo. can they live in coldwater? as it will cost alot of electricity to keep the heater going. also can they go in a tank that is unfiltered as that will also hoover up electricity. i could do a water change every 2 or 3 days and replace with warmer water than normal (only 2 or 3 degrees!) so that will keep the water clean and also a little warm for a day or so. i just need some opinions and help on this. im breeding them so eventually when i have enough i can get a botia of some description. and have a constant supply of food. Thanks all.