I found a 15 gallon plastic box which I can fill with water. I can use the girls' heater. He needs warm, clean water, but I don't have anything to use in order to fashion a filter. I made a sponge filter once, but it is gone now. I don't want to give Phoenix the girls' filter because it isn't ready and I only have ten days to finish the cycle before the girls arrive. Any ideas? Please?