See before-and-after examples of pool cleaning. Learn how to fix algae stains, scale buildup, and dirty walls with proven methods.
Nothing tells the story like a before-and-after. These case files show what real pool owners faced, what they tried, and the fixes that actually worked. You’ll recognize some of these problems and see exactly how to tackle them.
Case File 1: Green Walls from Algae
Before: Pool walls slimy and green within a week of rain. Chlorine test showed 0 ppm.
After: Brushed walls daily, shocked to 10 ppm, held chlorine above 3 ppm for 3 days. Clear in 72 hours.
Case File 2: Brown Metal Stains
Before: Brown streaks on plaster, worsened after shocking.
After: Vitamin C tablet test showed iron. Used a metal sequestrant and lowered pH. Stains lightened within a week.
Case File 3: White Scale Line
Before: Rough white line at the waterline, pH and hardness both high.
After: Lowered hardness with partial drain, balanced pH, used a scale remover. Brushed weekly to prevent return.
Cleaning Checklist
- Brush walls weekly.
- Vacuum or run cleaner twice weekly in summer.
- Balance calcium and pH to prevent scale.
- Use a metal sequestrant if fill water is high in iron.
See more gear in Gear Lab and troubleshooting in Quick Fixes. For stain ID charts, check PHTA resources.
FAQ
How do I know if a stain is metal or organic
Rub with a vitamin C tablet. If it lightens, it is likely metal. If not, it may be organic.
Do robotic cleaners help prevent algae
They help by stirring debris and scrubbing, but sanitizer must still be in range.