The system was quite large (i.e. 10 - 4x12 panels) but it definitely works. The first day it was on it raised the pool temperature from 73 F to 84 F, a couple of days later it was at least 90F.
In the past I have not been able to use my pool from October to March, but now it appears that I can use this pool year round. Thanks for a great system.
Rich Voorberg, Florida
August 2005