your low on cash go to pet fart and get the heater u need.....just return it when your done and this all blows over.....use your imagination why the product made in China isnt right.....
What does OP mean? Original Poster? But anyways If you cant find one for now try to do water changes with warmer water. But do it REALLY steadily. You dont want to boost the temperture up too fast. This is only a temperary solution. I just strongly suggest you go to petsmart or petco to buy a heater or 2. Fish keeping is an expensive hobby/