What Does Rain Do to Pool Water? Here's the Deal
In case you're a pool owner, you've probably wondered what does rain do to pool water after an enormous thunderstorm rolls through your neighborhood. It's tempting to look at a large downpour as the bit of "free water" to fill up your levels, yet unfortunately, it's seldom that simple. While a mild sprinkle may not do much, a significant rainstorm can turn your own crystal-clear backyard oasis right into a cloudy, green-tinted mess in just a few hours.
The truth is that rain isn't just pure H2O falling through the sky. It's obtaining all sorts of things on the way down, and once it hits your pool, it starts a bit of a chemical substance chain reaction. Understanding what's actually occurring under the surface can save you a lot of money on chemicals and a lot of period spent scrubbing the particular liner.
This Throws Your ph level and Alkalinity Out of Whack
One of the most immediate issues you'll notice is usually that rain messes with your water chemistry. Most people don't realize that rain is actually normally acidic. As this falls through the atmosphere, it picks up carbon dioxide, which lowers its pH level. Within most areas, rain has a pH of around five. 0 to five. 5, whereas your own pool needs to stay in that "sweet spot" of 7. 4 to 7. 6.
When that acidic rain hits your own pool, it starts to drag your own pH level down. But that's just half the battle. This also attacks your total alkalinity. Think of alkalinity because a "buffer" or perhaps a sponge that protects your pH from swinging wildly. Whenever rain dilutes that alkalinity, your pH becomes unstable. If you don't stay on top of it, that low ph level water can start to eat away at your pool's metal components, like your heater or step ladder, plus it can also irritate your eyes and skin the particular next time you jump in.
Dilution is Not really Always Your Buddy
We've all seen the pool water rise right after a big surprise. While it might look great to possess a full pool, that extra volume of water is in fact diluting all the particular expensive chemicals you've added. This is usually a huge part of what does rain do to pool water that individuals often overlook.
If your own pool was properly balanced with 3 parts per mil (ppm) of chlorine prior to the storm, plus then you get two inches of rain, you don't just have more water—you have a reduce concentration of chlorine. This "dilution effect" weakens your pool's immune system. Suddenly, right now there isn't enough sanitizer to kill away from the bacteria and organic matter that the storm simply dumped into the particular water. If you don't re-balance issues quickly, you're generally inviting algae to take up residence.
The "Invisible" Junk Rain Comes
It's simple to see the leaves and sticks floating on the particular surface after a storm, but it's the stuff you can't discover that causes the real trouble. Because rain falls, it grabs dust, soot, and smoke contaminants from the surroundings. Even worse, if the particular wind is whipping around, it's forced dirt, pollen, plus lawn fertilizers through your yard (or your neighbor's) directly into the drink.
These contaminants are basically a buffet for algae. Nitrogen and phosphorus are common in rainwater plus wind-blown debris, and so they act like "super-food" for those microscopic green spores. You might wake up the morning after a storm to discover your water searching a bit dull or even hazy. That's the particular first sign that will the organic weight has become too much for the staying chlorine to handle.
Rising Water Levels and Skimmer Issues
In the event that it rains with enough contentration, your water degree might rise above the opening associated with your skimmer. You might think, "The more water, the merrier, " but your skimmer in fact needs that opening to be regarding halfway submerged to work properly.
When the water level is simply too high, the skimmer can't create the "waterfall" effect needed to pull floating particles into the container. Instead, the leaves and bugs just sit there on the surface, eventually getting waterlogged and sinking to the bottom. Once they're on the floor, they start to decay, which uses up even more chlorine and can even spot your pool's finish. When the storm had been a real gully-washer, you might actually need to drain a few water out simply to get the circulation system functioning right again.
Why Your Pool Might Turn Gloomy or Green
So, you've got acidic water, diluted chlorine, and the bunch of organic "food" floating around. This is actually the perfect storm—literally—for an algae bloom. Within 24 to 48 hours of a heavy rain, it's common intended for pools to get on an over cast, milky appearance. This is often the stage before it turns "swamp green. "
This cloudiness is generally a mix of good dirt particles and the beginning levels of algae growth. Because the ph level is off, your chlorine isn't operating at 100% efficiency. Chlorine is significantly more effective whenever the pH is balanced; when the particular pH drops or spikes, the chlorine gets "sluggish" and can't kill off the invaders quick enough.
How to Fix Your own Pool Following a Storm
Knowing what does rain do to pool water any thing, but understanding how to fix it is how the real function begins. You don't necessarily need to panic, but you do need to act fast. Here's a simple game plan for when the particular clouds clear:
1. Clean away the debris
First things very first: get the large stuff out. Clear your skimmer plus pump baskets therefore the water can stream freely. Use the leaf net to scoop out whatever is floating and give the bottom the quick vacuum when it's looking unpleasant. You want to remove the "food" before it breaks down.
2. Lower the water degree if needed
If the water is burying your skimmer, use the "waste" or "drain" setting on your filter to provide the level down again to the midway point of the particular skimmer faceplate. This ensures your pool can in fact clean by itself again.
three or more. Test the water immediately
Don't guess. Get your test kit out there and look into the ph level, alkalinity, and chlorine levels. More than likely, you'll need to add a pH increaser or some salt bicarbonate (baking soda) to get your own alkalinity back upward.
4. Surprise the pool
Even if the water looks okay, it's a smart move to give it a "shock" treatment after heavy rain. This "super-chlorination" burns off all of the organic contaminants the particular rain brought in and kills any kind of early-stage algae spores before they may take over.
5. Run the filter
Let your pump run for at least twenty four hours straight after a storm. Your filter needs period to catch all those tiny particles that the rain introduced. If you have a fine sand filter, you might need to backwash it a few times during this process.
Should You Include Your Pool During Rain?
A lot of people ask if they will should just toss the cover on if they see clouds developing. It's a little bit of a toss-up. If it's a mild rain, a cover up can keep the biochemistry stable. But in case it's a serious storm with higher winds, a protective cover can actually be the liability.
Heavy rain plus wind can dump huge amounts of water and debris upon top of a cover, potentially sagging this into the pool and even tearing the anchors out associated with your deck. As well as, if you possess a solid cover without a water pump, that weight can become a nightmare to remove. Usually, it's better to keep it uncovered and deal with the chemistry afterward, except if you have a sophisticated automatic cover that's designed to handle it.
Last Thoughts
All in all, rain is just section of being a pool owner. It's annoying, sure, but it's not the end of the particular world as long as you don't ignore it. The particular main thing to remember is that will rain changes the environment of your water. It brings level of acidity, it brings "food" for algae, plus it dilutes your protection.
Next time a person hear thunder, don't stress too much. Just be ready to test your water after the sun comes back out. A little bit associated with proactive maintenance will go a long method for making sure a summer storm doesn't ruin your following weekend pool celebration. Just watch that will pH, provide a good shock, and you'll be back again to swimming within no time.