Black algae or metal stain

[Crazziee]

Hm-mm. Just processed your registration. Look up your address on Google Maps, satellite view.

If Google has your house ID'd correctly, dose your pool with 2 gallons of bleach each PM (or 1/2 gallon, if you've used copper). You appear to have a 16-20x40 modified rectangle with a deep end -- those usually run ~30,000 gallons

Thanks for checking it out. I have been wondering if the pool store misquoted me when they said it was about 44,000 gallons

[PoolDoc]

Actually dimensions will tell. It's worth measuring it!

And . . . what did the pH test show? Muriatic acid LOWERS pH levels; soda ash / washing soda or borax (Walmart detergent section) will RAISE it.

[Crazziee]

It was higher than my test kit, so over 8.

I will measure the pool now.

[Crazziee]

Wow I was way off. Its 32x16. Excluding the steps.

[PoolDoc]

Typically about ~20,000 gallons.