Pink algae grows all over, And turns the water into a cloudy, milky, white swamp.
When the algae is on the walls, it is slimy clear to light pink and most of it will brush off. If none will brush off, look out, you probably have metal staining. Use United's Pool Stain Treat for metals. Your pink algae will be immediately arrested and after you brush off any residue, your pool will havesuperior water clarity. Run your filter to clear it up.