Getting your pool in balance post-Harvey

Cleaning and draining your pool (if necessary) is a big part of getting your pool back in shape after heavy rains. But just because your pool is glistening does not mean that its recovery from Hurricane Harvey is complete. For your pool to truly be in tip-top shape the water chemistry must be in balance.

In this article, we’re going to take that newly cleaned pool water and make sure it’s chemically in balance. If it isn’t, we’re going to show you the importance of that balance and how to achieve it.

Putting your pool water in balance

The pool in the picture above looks glistening and ready to go, but having clean, aqua pool water doesn’t necessarily mean that everything is up to snuff. There are three areas of water chemistry which are extremely important in the well-being of your pool — the amount of cynaric acid, the calcium content and the alkalinity.

It’s very important to continuously check these metrics and not simply stop and be satisfied once the water is a desirable color. If you don’t check them, especially when dealing with a rain and flooding event such as Harvey, you leave your pool susceptible to algae blooms and scaling.

We detailed these measurements in an article we did on IntelliChem. While the IntelliChem system will let you know what the measurements are, the cynaric acid and chlorine will have to be applied separately.

Of the three measurements, cynaric acid might be the most important. Cynaric acid acts as a stabilizer, protecting the chlorine from getting burned off by the sun and losing its potency. Cynaric acid operates in a similar way that sulfates do in wine or homogenization does with milk. It keeps the chlorine fresh so it can do its part to get your water in balance. Having 30-35 parts per million of cynaric acid will help chlorine do its thing and help with calcium and alkalinity.

If you simply shock the pool every so often or throw in chlorine tablets without paying attention to the cynaric acid output, you’re likely to get the dreaded algae and scaling. And that’s not a good time.

How calcium and alkalinity keep water in balance

Keeping tabs on calcium is extremely important, as too little calcium will cause the water to eat away at the plaster while too much calcium will cause scaling on walls and on the pool surface. You want to keep the calcium between 200 and 400 parts per million, with 250 being the sweet spot.

As far as alkalinity, keeping it under control is necessary to prevent corrosion of the metal equipment in the pool and staining of the plaster. The range for alkaline substances is 80 parts per million to 200 parts per million, with 120 being the ideal amount. You should also aim to have the pH in your pool between 7.2 and 7.8, with 7.5 the prime target. Chlorine, with cynaric acid as a lead blocker, can get these elements to where you need them to be. For best results, have your free chlorine at 3.0 parts per million. As always, feel free to contact us with any questions about these matters.


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