Wanted: Mustard algae or suspected mustard algae

[Tredge]

Just a funny side-note:

It took over 30 boxes of 20 Mule Team to get my pool to 50ppm.....I bought out Super-Walmart twice. When I made it to the counter (Shopping cart was Heavy!) the checkout lady gave me a funny look.

I asked "My Wife sent me, Does Borax work on Blood Stains?"
Her Eyes widened a bit and before she got too nervous I said...."Just kidding, I have a Pool."
OH! she said with relief.

[itstoohot]

Tredge,

How big is your pool? The BleachCalc says that each 76 oz box adds 23.1 tetraborates to a 10,000 gallon pool. You would need about 2.25 boxes to get there. I have a 30,000 gallon pool, so I would expect to need 6.75 boxes (of course, I realize you can't buy .75 boxes, so let's call it 7).

Just curious to see if my math is right.

David

[chem geek]

BleachCalc has a known bug when it comes to Borates. 1 box, which is 76 ounces weight, of 20 Mule Team Borax raises the Borates level by 6.45 ppm in 10,000 gallons. You can use The Pool Calculator for a more accurate calculation. For your 30,000 gallon pool you would need 23-1/4 boxes to get to 50 ppm.

The Borates measurement is technically in "ppm Boron" which is probably why BleachCalc is incorrect as it is using a different molecular weight.

[Tredge]

Waterbear helped me with the calculations.

I was surprised at the amount I needed too (40,000 Gallon Pool) but the number of boxes given was spot on.