Titi: There's at least one not so expensive Electronic Nano-
chiller that would manage up to 16gal of water, rated at 85W. The Resun CL-85. There's another model that I would rather get, the Resun CL-150, with the same technology but that would cover 14gal easier, at 150W. The CL-85 manual states 16gal as the upper limit, but some users' revieww question its utility beyond 12gal.
The CL-85 usually sales around 200USD, the CL-150 around 300USD. See a pic of both models here:
http://web2.7ien.com/r/rs/en/productview.asp?id=46
Looking at e-Bay I found the CL-85 at 149.99USD and the CL-150 at 295USD. Since their shipping cost may be high (CL-85 weight is 13lbs, and the CL-150 is 19lbs), it would be wise to get it locally, if available.
Otherwise, relocating the tank likely makes more sense; the frozen bottle method is great for emergencies (it saved 2 out of 7 Red Salmon Rainbowfish for me) but requires a lot of effort.
e-Bay info:
http://shop.ebay.com/items/_W0QQ_nkw...Q_fromZQQ_mdoZ
Pepe
Santo Domingo