[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.