Using your kitchen faucet to heat the pool

[Brock]

Exactly, it would have to be a mat like material heavier then water, like a solar cover, once your pool is up to the temp you want you take it out rool it up and put it away.

[imfignewton]

Some one should come up with a crystal type structure as an addative to the plater finish that could change the color of the pool with the flip of a switch. That way you could have a black pool for heating in the cooler months and a white pool during the hot summer months. Just dreaming

[Tredge]

The primary function of a solar cover is to prevent heat loss....the black matt Idea would help heat the pool in the day but do nothing to prevent heat loss.

I have a feeling you would gain more from a simple cover to prevent loss due to evaporation than you would adding a black matt to the bottom.

Good Idea though

[graciec]

Then why aren't solar covers black?

[JohnT]

Then why aren't solar covers black?

There are black covers. My guess is clear is better because then you are heating water, not the cover.