Why High Phosphates In Pool Water? [Ultimate Guide!]

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While it is certainly a reassurance to know that your pool water is free of chlorine and that your pool is safe to use, it is also essential that you understand why your pool water contains high levels of phosphates. Phosphates are alkaline compounds that can be found in abundance in soil and fertilizer. When dissolving in water, they can contribute to water blooming. It is of fundamental importance to understand how much phosphate is too much and why your particular water body may require a higher dosage of phosphate than other pools. Keep reading for more information on this topic!

How Much Phosphate Should I Be Adding To My Pool?

When determining how much phosphate to add to your pool, you need to consider a range of factors. The most vital point to make is that you should not overload your pool with fertilizers. As much as possible, you should keep your pool free of any chemical compounds and additives. Phosphate is very soluble in water and becomes more available for fish and other aquatic life as the levels increase. However, too much phosphate can be toxic to your pool-mates, including yourself! The good news is that you can add enough phosphate to your pool to support healthy, fast swimming pools and fish. How much phosphate you should add will depend on the size of your pool and what result you wish to achieve. Always remember that the goal is to maintain a clear pool with no signs of algae or other plants flourishing. You should also check with your local utility company to find out how much phosphate is currently being added to your area’s water supplies. Knowing this amount will help you determine how much fertilizer to add to your pool.

Where Does All This Phosphate Come From?

Fish and other aquatic life in your pool will consume some of the available phosphate, but a large amount will dissolve in water and become available for plants to absorb. Some experts recommend avoiding the use of fertilizer all together in favor of composting or using kelp as a natural fertilizer. Either of these options can help reduce the phosphate levels in your pool. In some cases, over-fertilizing can cause algae blooms that reduce the clarity of your water and block sunlight from reaching the surface, harming the overall health of your pool.

The good news is that algae blooms can be prevented through proper maintenance and chemistry adjustments. In most cases, this simply requires checking for algae once or twice a week and removing any that may have formed. It is also essential to monitor the pH level of your pool water. If this number drops too far (generally below 7.2), then you may need to boost the acidity of your pool through the use of calcium additives or buffers. Calcium chloride or calcium carbonate are two common sources of acidity that you can use to adjust the pH of your pool. Using buffers can also help prevent algae blooms by maintaining a more stable pH level within the water body. For more information on keeping a healthy pool, consult the ‘How To Guide for Swimming Pool Owners’ which can be found on our website (link below)

What Are The Negative Effects Of Phosphates In My Pool?

The main issue with having too much phosphate in your pool is that it can become toxic to both animals and plant life. Plants can be particularly affected by the presence of high levels of phosphate in the water. The same goes for certain types of fish that live in fresh water. The most common symptom of poisoning from excessive phosphate is listless swimming, irritability, diarrhea, and eventually death. When animals and plants are exposed to high levels of phosphate for a prolonged time, they can develop a tolerance to it and experience unpleasant symptoms after even small amounts are consumed. The good news is that you can be on the lookout for these effects and take steps to reverse them. First, you should remove any signs of contamination by checking your pool for algae at least once or twice a week. Next, you should work toward lowering the total phosphate level in your pool as much as possible while still achieving the desired effect. Be careful not to overuse fertilizers or you may end up creating an unsafe environment for yourself and your pool-mates! Also, by regularly cleaning and maintaining your pool, you will greatly reduce the chances of algae blooms developing.

What About The Positive Effects Of Phosphates In My Pool?

While it is true that fish and other aquatic life can benefit from high levels of phosphate in the water, there are also some instances where you may wish to have more phosphate present than is absolutely necessary. Certain algae that live in fresh water can consume large amounts of phosphate and become extremely productive at absorbing it. Certain species of algae are known to accumulate large quantities of phosphate within their cells, which makes them highly resistant to contamination and upset. In these instances, the presence of high levels of phosphate can prove to be highly beneficial. Due to their ability to remove excess phosphate from the water, algae act as a natural filtering system and keep the pool clean and clear of debris. In addition, because algae are natural consumers of phosphates, they can help maintain healthy levels of the mineral in your pool.

Overall, the presence of high-quality algae in your pool can prove to be very useful, providing you with numerous advantages. It can help cleanse your pool, remove toxins, and give off a lovely greenish tint to the water. As much as possible, you should always try to keep your pool free of any chemical compounds including fertilizers, which can cause algae blooms. Make sure to regularly clean and maintain your pool to keep all these benefits!

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