Troubleshooting Common Pool Problems

Even with meticulous maintenance, pools can develop issues like cloudy water, stubborn algae, or equipment malfunctions. The good news? Most problems have straightforward fixes. This guide covers common pool issues, their causes, and the best solutions to keep your pool in pristine condition.
Cloudy or Dull Water
Possible Causes:
- Inadequate filtration or a dirty filter
- Imbalanced pH or low sanitizer levels
- Excess debris, pollen, or high bather load
Solutions:
- Check and Clean the Filter: If the pressure gauge is high, backwash or replace filter cartridges.
- Shock the Pool: Use a chlorine or non-chlorine shock to eliminate organic contaminants.
- Balance the Water: Adjust pH, alkalinity, and sanitizer levels to proper ranges.
Algae Growth
- Green Algae: Most common, easy to treat.
- Mustard Algae: Yellowish, often clings to walls.
- Black Algae: The most stubborn, requires aggressive treatment.
Treatment:
- Brush and Vacuum: Scrub walls and floors to expose algae to sanitizer.
- Shock and Algaecide: Use a span shock treatment and a targeted algaecide.
- Run the Filter Continuously: Keep the system running 24/7 until the algae is gone, then backwash or clean the filter.
Foamy or Sudsy Water
Possible Causes:
- Overuse of algaecides or clarifiers
- Residues from lotions, soaps, or hair products
- Low calcium hardness
Solutions:
- Dilution: Partially drain and refill if foam is severe.
- Balance Water Chemistry: Maintain calcium hardness at 200-400 ppm.
- Limit Chemical Overuse: Reduce unnecessary algaecide and clarifier use.
- Encourage Swimmers to Rinse: A quick shower before entering the pool reduces contaminants.
Chlorine Smell or Eye Irritation
Cause:
High chloramine levels (caused by insufficient free chlorine, not excess chlorine).
Solution:
- Shock the Pool: Breaks down chloramines and restores free chlorine levels.
- Improve Ventilation: For indoor pools, ensure proper air circulation.
Common Pump or Filter Problems
- Pump Not Priming: Check for air leaks in the suction line, ensure the water level is adequate.
- Reduced Water Flow: Clean clogged skimmer and pump baskets, inspect for plumbing blockages.
- Clogged or Dirty Filter: Backwash or clean cartridges to restore proper flow.
- Check O-Rings: Worn or damaged O-rings can cause air leaks; replace if necessary.
If the pump still won't prime or filter pressure remains high, contact a pool service professional.
Stains on Pool Surfaces
Metal Stains
- Brownish or rusty stains from iron or copper.
- Use metal sequestrants or ascorbic acid for spot removal.
Organic Stains
- Green or brown stains from leaves, berries, or algae.
- Shock, brush, and maintain proper sanitizer levels.
Most common pool problems can be resolved with a mix of proper diagnosis, consistent maintenance, and timely chemical treatments. Regularly testing water chemistry, maintaining proper circulation, and addressing minor issues quickly can prevent major headaches. If a problem persists, consulting a pool professional is advisable to inspect for underlying mechanical or structural concerns.