Closeups of the tile and pebble, Ruby in the pool.
chem geek said:As shown here, Petaluma does get rain in May and even sometimes a small amount in June. Hang in there, we should be seeing our drier summer soon.
The answer depends on whether it's windy or not. If there is little or no wind, then having the pool be open during the day when the sun hits it will tend to warm it up. With a white plaster pool of usual depth, 60% of the sun's energy is absorbed by the water (in your case it might be a little more since I think your depth is 8 feet due to the diving board). There is also heat loss from evaporation but overall you usually have a net gain unless there is wind or the air is very dry (it's not that dry where you live -- relative humidity in the summer is usually around 50-60%).bobby1017 said:When the sun is out will the pool warm more with the cover open or closed? I've been opening during the day and closing at night.
Yes, that is true. Perhaps 50% so maybe you'll get 75% or so absorption of sunlight. A black bottom pool absorbs around 95% of the sun's energy between the bottom and the water.bobby1017 said:Thanks for the clear explanation. The Tahoe blue bottom must absorb a little more heat than white also.