New build in South Texas

[PoolDoc]

@martinkennedy: I'd be very interested in whatever photos / details you can provide on the controls & pump that maintain the overflow basin. I'm getting feedback from various sources that pools with infinity edge often began to have problems after a year or so, and end up been run with levels below the water flow.

I can think of several ways to run a pit below pool level, but some are much more reliable than others.

[martinkennedy]

There are 3 drains in the catch basin and 6 returns at the shallow end of the pool. It has a Pentair variable speed pump that only controls the flow of water over the infinity edge. It's the 3" line on the left of the picture

[martinkennedy]

Ultimately when all the wiring and controls are done the pump for the infinity edge will start when any of the water features that put water into the pool or basin are turned on. The water bowls, the exterior mini waterfalls on the side of the raised beam or the herons

[PoolDoc]

One thing you'll need to watch for: any time the edge is ON, you'll be stripping carbonate alkalinity and raising the pH. The process won't stop till the pH is around 8.0. It will take time to learn how to manage it, to maintain carbonate saturation. But, given all the tile grout and plaster you have, it will be critical.

How were you planning to treat the pool? There's something feeder-looking between the filter and the Pentair pump. What is that?

What's the Pentair driving? An infloor cleaning system?

[martinkennedy]

The other Pentair pump is running a few of the water features as well as an in-floor cleaning system. The 3rd pump will be running the bowels. We will be using Tri-Cor tablets for chlorination. With the aeration that we are doing it should help with the CYA. I understand as you have pointed out, that with the water flow into the catch basin that it will have an impact on the PH. I am having an outside service take care of the pool but I also have a test kit of my own to keep another set of eyes on the readings. Thanks for your continued comments and advice.

[PoolDoc]

Ok, thanks for the info. One more question: in looking through the photos of the pool, I noticed a number of outlets on the wall of the pool closest to the house. What are those?


And . . .

The 3rd pump will be running the bowels.

Huh?

With the aeration that we are doing it should help with the CYA.

Not sure what you mean; aeration has no effect on CYA levels.

[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