Shopping Cart

Your cart is empty.

Your cart is empty.

AquaDoc pH Decreaser - pH Down for Hot Tub Spa - Hot Tub Chemicals pH Decreaser pH for Hot Tub and Spa - Spa Down and pH Minus Chemicals for Hot Tub Maintenance - Hot Tub pH Reducer - 32oz

Free shipping on orders over $29.99

$26.99

$ 11 .99 $11.99

In Stock

About this item

  • Why Decrease Hot Tub pH? Did you know that the water in your spa should be maintained at a pH of 7.2 to 7.8 and total alkalinity from 80 to 140 ppm? Using a pH down for hot tub or pH decreaser for spas will help you maintain your hot tub chemistry.
  • pH Down For Hot Tub - Our pH down hot tub will help you maintain your hot tub chemistry balance. If your spa's pH measure is outside its range, it is essential to use a hot tub pH decreaser to treat cloudy tub, scale build-up, and more.
  • Hot Tub Chemicals pH Decreaser - When spa and hot tub chemicals are not at their ideal levels, one can be at risk of suffering from skin irritation, and the water can turn dull and cloudy. High pH can damage your pump and filter if left unchecked.
  • Decrease Hot Tub pH and Increase Your Sanitization. Another side effect of high pH is that the water may irritate users' causing problems like itchy skin and eye irritation. Our hot tub pH reducer will help you deal with it all.
  • pH Decreaser For Hot Tub Made In The USA - At AquaDoc, we make high-quality spa chemicals to help balance your hot tub and spa chemistry and treat them with care. When you choose AquaDoc, you are getting consistent quality.



Product Description

pH Down for Hot Tub Spa

ph down. ph decreaser for pool. spa alkalinity decreaser for hot tub
ph decreaser for hot tubs. liquid ph down for swimming pools. hot tub chemicals ph decreaser
ph decreaser for hot tub spa. spa chemicals for hot tub ph decreaser. ph reducer for hot tub
decrease ph hot tub. jacuzzi ph down for hot tub spa jacuzzi. liquid ph down for pools
ph down for hot tubs hot tub ph increaser and decreaser

Spa pH Decreaser for Balanced Water Chemistry

Keep your hot tub water properly balanced with our Hot Tub pH Decreaser. If your spa's pH is too high, it can cause cloudy water, scale buildup, and reduce your sanitizer's effectiveness. Our pH reducer returns your water to the ideal pH range (7.2–7.8) and helps lower high alkalinity levels. It also helps prevent skin irritation and ensures your hot tub water stays clear and comfortable. Easy to use and effective, this pH decreaser for hot tubs is the perfect solution for maintaining balanced spa water.


Thomas Reitmeier
2025-09-03 16:43:19
As advertised
Marty L. Cowling
2025-07-28 13:53:59
It only takes a small amount (1 oz) to correctly adjust the pH level in our hot tub. How easy is that?
Amy E
2025-07-16 09:27:00
I love how this lowered the PH in my hot tub!
Mariam
2025-05-07 18:45:29
It worked, however it did actually take the whole bottle to decrease the alkalinity to a point where it was in the ok range.Once I added soda ash to increase the ph, the alkalinity just went right back up.
Etta Mitchell
2025-04-18 16:32:35
The instructions are clear and it works like a charm when I use it in my spa. I’m new to owning an inflatable spa, so just learning all of the chemicals is a challenge
diane keway
2025-04-10 18:37:05
This works way better and a lot cheaper then my local hot tub supply store.
Miguel juvera
2025-03-12 17:15:44
It doesn't work, it doesn't lower the ph no matter how much product you add
The wizard
2024-12-24 18:16:56
Works really quick
Recommended Products

$15.90

$ 6 .99 $6.99

4.6
Select Option

$12.88

$ 5 .99 $5.99

4.7
Select Option

$16.30

$ 6 .99 $6.99

4.6
Select Option

$46.95

$ 22 .99 $22.99

4.3
Select Option

$37.83

$ 18 .99 $18.99

4.6
Select Option

$10.69

$ 4 .99 $4.99

5.0
Select Option

$33.25

$ 16 .99 $16.99

4.5
Select Option