Why Does My Pool Water Keep Getting Cloudy? [Solved!]

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It’s sad to see your pool get cloudy from time to time. Especially when you’ve just finished taking a long swim, enjoying that cool summer breeze on your skin and feeling that wonderful water on your lungs. That’s why you might ask why does my pool water keep getting cloudy?

The answer is not hard to find, and it doesn’t even require you to check the pool’s pH level. There’s actually a very simple and logical explanation why your pool water keeps getting cloudy: too many fish. Too many fish will produce too much algae, which is what makes the water cloudy.

You might be wondering how many fish are safe to have in your pool. It’s a common question, especially since many people are unfamiliar with the harmful effects of algae. Let’s explore harmful effects of algae and what you should know about them.

Not For The Faint Of Heart

Algae can be found in nearly all bodies of water, and it’s always present in large amounts. It typically forms thick layers on the surface of the water, giving the impression that the water is thick and cloudy. While there’s often an abundance of algae present, it’s not necessarily harmful. It’s generally a good thing.

The types of algae that are harmful do so only when consumed by something. Most algae are harmless to humans and other animals, and they provide many benefits to the environment. However, there are a few species of algae that can cause severe problems when consumed by something else. Chief among these is ciguatoxon, a common name for Alexandrium catenella. This type of algae will accumulate in the liver and nervous system of fish, causing severe health problems. Even in small quantities, it’s extremely dangerous to animals and humans due to its toxicity.

What Is Algae?

If you’re not familiar, algae are plants that live entirely in water. As the name suggests, they’re covered in tiny, hair-like structures called algaemes, which offer protection from water-borne creatures such as fish and other aquatic animals. This is why it’s often said that fish are attracted to and feed on algae.

Algae are essential to maintaining a healthy ecosystem due to their ability to rapidly absorb nutrients from the water. Too much algae in the water may even cause the water to become cloudy due to the thick canopy of plants.

Though they’re not considered dangerous in most cases, algae can accumulate toxins that are harmful to humans and other living creatures. These toxins often accumulate due to the way algae grows and reproduces. When this happens, it’s often referred to as algal blooms or green tides.

It’s important to note that these blooms are often harmless, but they can be caused by excessive nutrients from farming or pollution. When this happens, it’s imperative that you take precautions to avoid contact with the water, especially if you’re a fish swimmer. Even if you clean the water before and after swimming, there’s still a possibility that you might contract an infection.

Why Does My Pool Water Keep Getting Cloudy?

Algae are very efficient at taking in nutrients, and they can accumulate in large quantities relatively quickly. This is why it’s often said that algae are the macro-organisms of the sea. While it’s not unusual for pools to have some algae present, it usually isn’t a problem. Pools that are directly connected to the ocean or another large body of water are at greater risk of accumulating high amounts of algae. This is mainly because the oxygen in the air is unable to reach the pool surface, meaning there’s no oxygen for the algae to use.

However, even in freshwater pools, algae can quickly multiply, resulting in excessive amounts. Though these excessive amounts of algae do not pose any serious threats to humans or other animals, it’s still a good idea to maintain an uncluttered pool area so there’s no chance of the water becoming cloudy and murky from all the waste and excrement.

To avoid this, it’s important to clean the pool area regularly. Using a pool cleaner that’s specifically designed for cleaning freshwater pools is the simplest and safest way of doing so. There are also many natural ways of cleaning a pool area such as introducing earthworms, which prey on dead matter at the bottom of the pool.

Get Rid Of Algae

If you’ve ever swum in a pool with excessive amounts of algae, you’ll know exactly what we’re talking about. It’ll slowly but surely block all the sunbeams that pour into the water, turning it a grimy brownish color. Though this might not seem obvious at first glance, seeing this sort of thing regularly is bound to drive you nuts.

If you really want to get rid of the algae, there are a few options available. You can either introduce aquatic plants or fish to eat the algae. If you have the room, consider installing a water feature that might just draw in hungry creatures from near and far. Or perhaps you’ll simply have to clean the pool more frequently, keeping your fingers crossed that all your hard work will be worth it.

One thing is for sure: too many fish are not a good thing for algae, and vice versa. Having any type of fish in your pool presents a risk of becoming sick from excessive amounts of algae. The simplest and probably the safest way to keep your pool crystal clear is to keep the amount of fish in check. This brings us to our next point.

Fish Are Bad For Algae

If you have a pair of goggles on, consider yourself warned. It might seem obvious that having too many fish in your pool will produce too much algae, but it’s not necessarily the case. There are several situations where the exact opposite can happen, with the overabundance of fish leading to the decrease of algae. This is mainly because of the way fish behavior works when it comes to their natural environment.

One of the primary reasons why fish are usually found in large groups is because their main source of food is algae. Fish will typically swim close to the surface to feed on aquatic plants, avoiding murky waters. This is why clean and organized pools are often a safe haven for hungry fish.

In some cases, it’s possible for fish to overfeed on algae, causing them to become sick. To avoid this, regulate the amount of food that your fish are consuming. You can do this by introducing little fish such as daphnia or other crustaceans into your pool. These little creatures are often used in commercial fish tanks as a food source for the larger fish. In aquamarine lakes and oceans, it’s often the case for fish to feast on what they call plankton, which are microscopic organisms that drift along with the currents. Typically seen in the form of blue-green algae, microscopic organisms are essential for an ecosystem because they rapidly absorb nutrients from the water, resulting in an abundant food supply for larger fish and aquatic life.

Algae Will Grow In Any Amount

This point is worth making. It’s not necessarily the case that having more fish in your pool will cause the water to become filled with algae. It’s all about the amount that you have relative to the size of the pool. The smaller the pool, the more susceptible it will be to becoming cluttered with algae. For example, if you have a 20 foot pool and you start introducing a pair of goldfish, within a few weeks you’ll be looking at a dense layer of algae. This is because there’s simply not enough room in the pool for both fish and algae to exist peacefully side by side.

When it comes to keeping your pool free of algae, it’s important to understand its presence will not necessarily be visible to the naked eye. While it’s often said that the water will become cloudy when there is too much algae, this may not be true. There are several instances where the water remains crystal clear even when there’s an abundance of algae present. In these cases, the clarity is due to a protein-based coating that the algae produce as a protective layer. However, this layer can break down, allowing the algae to be seen through.

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