Solar Fish??

[waterbear]

The primary chemical in heatsavr (Solar Fish) is isopropyl alcohol which changes the evaporation properties of water. Because a pool loses most of the heat through evaporation, this can help reduce heat loss as well. They claim as much as 40%. It is not as effective as a cover but a whole lot easier to use. I plan on trying it out this season to see how well it works.

Here is a web site that has the technical information:

http://www.flexiblesolutions.com/pro...ety_data.shtml

My understanding is that is is a proprietary susbstance in an isopropyl alcohol carreir or solvent. It is supposed to leave a molecule thick coating on the surface of the water. This leads me to believe it is some type of polymer. The MSDS that the above link goes to lists the isopropyl (commenly called rubbing alcohol) as the only hazardous ingredient since it is both toxic and flammable. Alcohol will disperse in water and not form a film on the surface. If you had enough in the water it would evaporate first but you would need to have a pretty strong mixture...probably over 50% to have any appreciable effect!

[mas985]

oops, I guess I missed the note on the primary chemical. Sorry. However, the effectiveness test do show some promise.
http://www.flexiblesolutions.com/pro...ss_tests.shtml