I'm gonna recommend that you order kanaplex off ebay for $8. Use a credit card and don't leave your computer chair. I mentioned my fish had popeye and I got it in two days (I live in the same state as the supplier though)
http://www.ebay.com/itm/321033890531
The ebay shipping time estimate was 3 days more than it took for me. (said 5 days took me 2)
If you look for kanaplex from sellers on ebay they are all in that ball park AND you can find the one in the state nearest to you to further speed shipment time (make sure to mention your fish is in dire need to insure they ship it the day they receive payment)
If you have clamp lights (or regular lights) you can place them over the tank to generate heat. I did that and it was the difference that added enough temperature to both get my tank to 81* and keep it at a consistent temperature