New build in South Texas

[martinkennedy]

Sorry bowls not bowels. With the water falls and mist and evaporation that goes along with it, the need for replacement water increases. Replacing the water at a higher rate in effect acts as a counter balance to higher CYA. This just means I will go a longer period of time before I will have to drain and refill the pool to lower the CYA created by using chlorine pucks in the chlorinator.

The outlets at the end of the pool are the returns for the catch basin and the other are the returns from the skimmers

[PoolDoc]

Thanks for the info. I think I can visualize the system functionally, now.

With the water falls and mist and evaporation that goes along with it, the need for replacement water increases. Replacing the water at a higher rate in effect acts as a counter balance to higher CYA.

Actually, that's not correct. Losing water to evaporation has no effect on the total quantity (mass) of CYA present in the pool water, just as solar evaporation does not lower the ocean's salinity. The reason is that the water vapor -- evaporated water -- is essentially distilled water, free of all chemicals. Some volatiles may be present, but CYA does not have a significant volatile fraction.

There are 3 known ways to lower CYA:
1. Drain (as liquid water, not evaporate as water vapor) and replace.
2. Precipitate with melamine, making a huge mess.
3. Biodegrade with heterogeneous 'slime' composed of algae and soil bacteria. This happens naturally, but is unpredictable as to rate of degradation (2 weeks to months) and endpoint (nitrogen gas, nitrates, or ammonia).

[martinkennedy]

To be clear, I am not talking about evaporation by itself. I am talking about the mist created from the waterfall's (I have three) over the infinity wall and the other two mini falls as well as the mist and water disbursement because as the water falls the wind carries some of it away. If you have ever been to Niagara Falls that mist that is in the air is a direct result from the falls. This necessitates the need for more water. In effect I am replacing more water than a standard pool. It will not completely remove the appropriate CYA, but will delay the need for water replacement on a wholesale basis

[martinkennedy]

More work going on. We still have about 6 more weeks of work

[martinkennedy]

[PoolDoc]

OK, you are correct -- water leaving the pool as mist would take the CYA with it. I hadn't considered that.

[martinkennedy]

It’s something I will have to measure over time and see what the data looks like