ascorbic acid treatment

[pooltech]

Hi pool doc.thanks for the response. The sequestering agent is Sparkle Conquest, manufactured by Alden Leeds Inc.. I added one quart per 20,000 gal.. total added was four quarts for 80,000 gal. I had an independent lab do water test on our supply water and pool water. The lab says that mg/L is the same as ppm (parts per million). supply water test is as follows: iron= not determined, magnesium= 5.38 mg/L, copper= 0.134mg/L, and manganese= 0.0232mg/L. pool water test is as follows: iron= not determined, magnesium= 35.8mg/L, copper=0.0047mg/L, and manganese=0.0111mg/L. what is the bucket test? I was not able to do direct reply and had to start another thread…thanks for your time…pooltech..

[PoolDoc]

Well, your test runs tell you that neither copper nor manganese are the problem . . . which probably means iron is.

The metals bucket test is described in this forum section (Dealing with Stains & Metals, . . . and 'Minerals' & 'Ions') and allows you to test for staining metals in your water in a non-quantitative, but more reliable manner.

The 2004 MSDS I have for Alden Leeds Conquest reports that it *was* 60% HEDP, so I assume it probably still is. You might want to call A-L and ask, though. 1 gallon of 60% HEDP in 80,000 gallon is pretty high, and could cause problems with calcium > 300 ppm.

(At least for water, your lab is correct that 1mg / L = 1 ppm.)