Quote:
Originally Posted by sammyg2
I drained my pool this weekend.
The hardness was over 800 ppm and I have a bunch of black algae staining, so i bit the bullet.
I power-washed the whole pool (lower pressure setting) and have chlorine-washed the stains.
So what's next? Chlorine wash the whole pool, acid-wash, or just re-fill? i don't want that black algae coming back, it's a beotch.
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Black algae shows up because of inadequate filtration and sanitation.
1. Make sure your filter is clean and in good working order.
2. Make sure you turn over (filter) the entire pool water volume every day.
3. Keep pH balanced and cl2 at 5-10ppm for a full year to kill off the established algae roots.
If your pump and filter are 20+ years old, replace it with modern filtration gear.