Troubleshooting Low Suction in Your Pool: Unraveling the Causes and Solutions

A sparkling, well-maintained pool is the epitome of summertime bliss, but when you notice a lack of suction in your pool, it can quickly turn your relaxation haven into a source of frustration. In this blog post, we'll explore the common reasons signs of low suction and why your pool might be experiencing reduced suction and provide practical solutions to get your pool back to its optimal performance.

Signs of Low flow/Suction

There are a few quick signs that your pool is experiencing low flow or suction at the pump and you need immediate attention.

1. Pool Filter PSI has increased 10 PSI since last cleaning.

2. Pool cleaner vacuum is moving slower than normal or not at all

3. Your spillover from your spa into the pool is weak or non-existent

4. Starting to see algae in corners of pool or in shadowed parts of pool

5. Cloudy or murky water.

Possible Solutions to your Low Suction problem

1. **Clogged Skimmer Baskets and Pump Strainer Basket:**

One of the most common culprits for low suction is a clogged skimmer basket or pump strainer basket. Debris like leaves, twigs, and other contaminants can accumulate and hinder water flow. Regularly check and clean these baskets to ensure unrestricted water flow.

2. **Dirty or Clogged Filter:**

A dirty or clogged pool filter can significantly reduce suction. Whether you have a sand, cartridge, or DE filter, periodic cleaning is essential. Follow the manufacturer's guidelines for cleaning or backwashing to maintain optimal filtration efficiency. Typical filter cleanings are recommended every 6 months or when the filter pressure has risen 10 PSI over the original PSI when clean.

3. **Air Leaks in the Suction Lines:**

Air leaks in the suction lines can compromise the efficiency of your pool's circulation system. Inspect the suction lines for any visible cracks, loose connections, or damaged seals. Seal any detected leaks promptly to restore proper suction.

4. **Closed or Partially Closed Valves:**

Check the position of all valves in your pool's plumbing system. If a skimmer or main drain valve is closed or partially closed, it can restrict suction. Ensure that all valves are open to allow for proper water flow.

5. **Pump Impeller Issues:**

The pump impeller is responsible for drawing water into the pump. If it becomes clogged or obstructed by debris, it can lead to reduced suction. Regularly inspect and clean the pump impeller to ensure smooth operation.

6. **Losing Prime:**

A loss of prime occurs when air enters the suction side of the pump, preventing it from effectively pulling water. Check for leaks in the suction lines, tighten any loose connections, and ensure that the water level in the pool is sufficient to cover the skimmer.

7. **Pump Size Mismatch:**

Ensure that your pool pump is appropriately sized for your pool. An undersized pump may struggle to create adequate suction. Consult with a pool professional to determine if your pump size aligns with the volume of your pool.

8. **Debris in the Plumbing Lines:**

Occasionally, debris may enter the plumbing lines and cause blockages. Use a plumbing snake or similar tool to remove any obstructions within the suction lines.

9. **Water Level Too Low:**

Maintain the water level in your pool to ensure proper skimming and circulation. If the water level drops below the skimmer intake, it can lead to reduced suction. Keep the water level within the recommended range.

10. **Professional Inspection:**

If you've exhausted the troubleshooting steps without resolving the issue, it's advisable to seek the expertise of a pool professional such as Blue Pelican Pools. We can conduct a thorough inspection, identify hidden issues, and provide tailored solutions to restore optimal suction.

Maintaining proper suction in your pool is crucial for effective filtration and circulation. By addressing these common issues promptly, you can ensure that your pool remains a clear and inviting oasis for relaxation and enjoyment. Remember, regular maintenance and proactive troubleshooting are key to a trouble-free pool experience.