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Spa pH Decreaser

Natural Chemistry Spa pH Decreaser lowers pH in spa/ hot tubs water.


The Natural Chemistry Spa pH Decreaser lowers the pH in your spa/ hot tub water.

Hudson Product Number: 0780007

3.37 lbs.


  1. Test spa water for pH level
  2. Compare pH test results to chart (on bottle) to determine appropriate amount of product necessary to make adjustment.
  3. With the spa not in use and circulation pump operating, add required amount directly into spa water. Continue circulating water a minimum of 30 minutes.
  4. Restest and adjust if necessary.

Always read the product label instructions before each use.

Material Data Safety Sheet:

0780007 PH Down

Have questions about using this chemical product?

Our AskSAM program can help! At Hudson Aquatic Systems, we’ve developed a water quality service program of best practices with an expert in addressing water quality issues for current and past customers. For any Hudson (or Ferno) underwater treadmill system or custom pool, you can email Ask SAM and discuss your situation with Sam Reinking.