Is there is a scientific study that compares water temperature that is dyed vrs undye water. I've read that dye reduces UV, reduces algae, reduces weeds and reflects sun. Of coarse that was from companies that want to sell dye. Seems like it would also reduce water temp. Is there colored dye that will actually reflect the sun?? My pond is so close to being able to support yeararound trout. Some years they make it and some years the water gets too hot. Any insight on pond dye???