I have had several pool covers over the years, blue, blue and black, clear, clear with diamond shaped bubbles. Last year I purchase a "Gold Series" solar cover. It is blue on the top with a reflective good metallic layer that faces down. This cover is by far the best cover I have ever owned. It's high quality but more importantly I have 5-7 more degrees in water temperature then I have ever had. In July I had to take it off the water was so warm. Very pleased.
It's not possible to add optimizer plus to a pool with the solar cover on. You will need to remove the solar cover from part or all of the pool in order to put optimizer or other pool treatment products into your swimming pool water.
Useless
Try a solar pool cover. Blue or black is best.
No
when you are in the pool
yes
A solar pool cover can help increase the temperature of a pool by around 5-10 degrees Fahrenheit depending on factors like sunlight exposure and pool size. The amount of heat gained will vary but generally, solar pool covers are effective at harnessing solar energy to warm up the pool water.
Bubbles down
It is depends on the type, brand and size. It cost about $219 for the 10m x 6m solar swimming pool blanket cover and $512 for the solar pool cover 500 micron series.
First, the small variation in thickness between makes and models of solar pool covers will not significantly change the amount of heat absorbed by the water. That being said, a thicker pool cover may be more tear or damage resistant than a thinner cover and thereby, last longer. But it may also be more expensive and heavier, especially when wet as you pull it out of the pool. Hope this helps ...
A pool with a solar cover will absorb the heat faster during the day and when left on the pool over night it will prevent the loss of heat.
It keeps your pool warm. "This effective solar ball keeps your above ground or in ground pool warmer by spreading an invisible layer of non-toxic, biodegradable film. This invisible layer cuts down on one of the major pool cooling forces – evaporation. Up to 60% as effective as a traditional solar pool cover. Best of all Solar Ball works all the time and there is no cumbersome solar pool cover to haul around. Simply drop the Solar Ball in your pool’s skimmer and its special time released delivery system will keep your pool warm for 30 days. It is not affected by automatic pool covers." - http://www.pcpools.com/products/solarball.html?sku=NS794&id=117