How much is a realistic amount of water to lose due to evaporation? Just wondering if we have a small leak or just losing water due to evaporation. Losing about an inch a week.
Wow!! Thanks for all the info! Will read up and try the bucket test.
If using a solar cover, should I leave it off for 24 hours to test with the bucket or how do I do it?
Is there a good calculator for evaporation rate as a function of the various parameters mentioned?
I was in another thread where the OP was asking about salinity increase due to evaporation and high salinity fill water. It would be nice to be able to point folks towards a calculator if one is available.
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not sure why that would really be helpful? the main issues with evaporation, especially fast evaporation is people being concerned about having a leak. that is easily confirmed with the bucket test. as far as a calculator, not sure how helpful that would be, being that humidity, air temperature and wind speeds are so variably over a 24 hour day. you just wouldn't get great results. if your bucket tests confirms 1/4" per day, etc, that what it is. it really doesn't matter if you use a calculator and determine you "should" be getting 1" of evaporation and really get 1.5". if there is no leak, then you are losing 1.5" to evaporation no biggie.
as far as figuring out salinity increases, that's pretty simply. if you have an average depth of 4 feet in your pool, and you lose 1" that's 2% of volume decrease. so everything increases by 2%. 3500ppm salt becomes 3570ppm. negligible, and not within the range of testing. its the same issue with rain , the increases in total volume of the pool is so small its negligible
as far as someone filling up the pool with high salinity water, not sure on that thread, but that can be calculated pretty easily too. all you need to know is how much each inch of pool water is on a percent of the pool volume. if you know the salinity of the water being added, you can calculate the total increase in ppm per inch of water refilled. evaporation really isn't a factor in determining that, just the total volume added each time and keeping a running tally of salt ppm. but again, I don't think that is a very common practice at all.