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Pool Shop Australia Pool Shop Australia
Nov 24, 2023

Recognising the Signs Your Pool Filter Needs Attention

For any pool owner, maintaining a sparkling clean and healthy swimming pool is a top priority. A key component of this maintenance is the pool filter, a vital part that often gets overlooked until problems arise. Understanding the signs that your pool filter needs cleaning or replacement is crucial for keeping your pool in top condition. Let’s dive into these indicators.

1. Cloudy or Dirty Water

The most apparent sign that your pool filter isn't working correctly is a change in water clarity. If you notice that your pool water is consistently cloudy or has visible debris, it's a clear indication that your filter isn't capturing and removing contaminants effectively.

2. Reduced Water Flow and Increased Pressure

A clogged or dirty filter will often lead to reduced water flow and increased pressure in the filter system. Check your filter’s pressure gauge; a reading that is 8-10 psi over the normal operating level suggests it's time to clean or possibly replace the filter.

Onga Pantera Sand Filters


3. Algae Growth

Algae in your pool can be a sign of several issues, one of which is a failing pool filter. If algae start to appear even though you’re maintaining proper chemical balance, it's time to inspect your filter.

4. Unusual Noises from the Filter

Unusual noises, such as grinding or screeching, coming from your pool filter system can be a sign of internal damage or wear. This often means the filter requires professional inspection or replacement.

5. Shorter Cycles between Cleanings

If you find yourself needing to clean your filter more frequently than usual, this could be a sign that it's losing efficiency. Over time, filters can become less effective due to wear and tear or persistent clogging.

6. Visible Damage to the Filter

Regularly inspect your pool filter for any signs of physical damage, such as cracks in the filter housing, tears in the filter media, or broken parts. Visible damage is a definite sign that your filter needs replacement.

7. Age of the Filter

Like any equipment, pool filters have a limited lifespan. If your filter is several years old and you’re noticing a decline in performance, it might be time to consider a replacement.


Regular maintenance of your pool filter is essential for ensuring a clean, healthy, and enjoyable swimming experience. By being aware of these signs, you can take timely action to clean or replace your pool filter, thus avoiding more significant issues down the line. Remember, when in doubt, consult with a pool maintenance professional to get the best advice for your specific situation.


Keeping an eye on these indicators will not only help in maintaining the aesthetic appeal of your pool but also extend the life of your pool equipment. Happy swimming, and remember, a clean filter is the key to a clean pool!

About Pool Shop


Pool Shop is one of Australia's leading suppliers of pool and spa products, offering a wide range of essentials like cleaners, pumps, lights, chlorinators, filters, chemicals, spare parts, and more. We stock the highest quality products as authorised sellers of leading brands such as Zodiac, Astral Pool, Maytronics, Hayward, Madimack, Polaris, Pentair Onga and more. With a price match guarantee and fast delivery, we ensure a seamless shopping experience.

Visit our shop in Unanderra near Wollongong for personalised service and expert advice or order online.

Contact us on support@poolshop.com.au or call 02 9137 8914.