About Cloudy Pool Water
The company behind the site, the sources of its amounts, how those amounts are checked, and how you can reach us.
Everything on this site is the responsibility of Pinecrest Diagnostics Inc., the company that publishes Cloudy Pool Water.
- Published by: Pinecrest Diagnostics Inc.
- Postal address: 2201 Cooperative Way, Suite 600, Herndon, VA 20171, United States
- Email: info@cloudy-pool-water.com
This site helps backyard pool owners answer two questions: what turned the water cloudy, green or some other color, and what will clear it. You tell the troubleshooter what your water looks like and answer one follow-up question; it then works out the shock and liquid chlorine for your pool's size.
The sources of the amounts
- Chlorine, pH and safety limits come from the CDC's Healthy Swimming guidance, the CDC Model Aquatic Health Code and the Illinois Department of Public Health.
- Shock amounts by color come from Swim University's shock guide: a routine shock takes one pound of 65% cal-hypo per 10,000 gallons, light green water two, dark green three and black-green four.
- Liquid chlorine amounts are the same doses in liquid form, worked out from the Illinois health department's cal-hypo figure (2 oz gives 1 ppm (part per million) in 10,000 gallons) and from Leslie's chlorine dosage chart, where 10 fl oz of 12.5% liquid chlorine does the same.
The checks behind the numbers
The editors at Pinecrest Diagnostics Inc. check every dose before any page goes live, and they write the guides too. The source each figure links to, be it the CDC, the Illinois Department of Public Health, or a published chart of doses, is what the editors compare it with. The troubleshooter's formula is also rerun on that source, so the guides, the tables and the tool all give one amount for the same pool. If sources disagree, the page tells you which one it follows.
Both the source and the arithmetic get that check. Want to know what your own water shows? Bring a sample to a pool store, or have a pool service run the test.
Safe use of the amounts
These are starting doses, meant for cases where a test shows low free chlorine or algae growth. Test chlorine and pH before you treat and again after, follow the label on your product, and add chemicals one at a time. Never mix them.
Algae is not always why water turns green: clear green right after a shock usually points to metal in the water, and further shock makes it worse.
No advertising, no sponsors
Nothing is sold here, no brand pays the site anything and no advertising appears, so you will not see any product recommended by name.
Did we get a number wrong?
Send the page and your source to info@cloudy-pool-water.com, and the page gets corrected.