pH Decreaser for Hot Tub
pH Decreaser for Hot Tub
Swiftly adjust pH to protect equipment and ensure a balanced spa experience.
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Our pH Decreaser swiftly adjusts your hot tub or spa water's pH, safeguarding equipment from damage due to imbalanced levels and ensuring a rapid restoration of pH balance for a harmonious and effective spa experience.

This product should be used if pH is above 7.8.
- Turn on air blower or filter system.
- Add 1 oz. of this product.
- Retest water after 30 minutes.
- Follow steps 1-3 until pH and total alkalinity are in the range of 7.2-7.8 and 80-140 ppm respectively.
NOTE: Do not add more than 1 oz. at a time. Always wait 30 minutes between doses and test water before each addition of this product.

Why is maintaining the pH level in my hot tub or spa important?
Proper pH levels (7.2 to 7.8) are vital for water comfort and chemical effectiveness. Imbalanced pH can lead to skin irritation, cloudy water, and potential damage to equipment.
Can I use AquaDoc pH Decreaser with different hot tub sanitizers?
Yes, AquaDoc pH Decreaser is compatible with various hot tub sanitizers and spa chemicals, making it a versatile choice for maintaining pH balance.
How often should I test and adjust the pH level in my hot tub or spa?
Regular pH testing is essential, especially when you refill your hot tub or spa. Aim to keep the pH within the recommended range to ensure a comfortable and safe water experience.

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Why is AquaDoc the Best in Pool Chemicals?
- 🌿 Paraben free & Aluminum free
- 📦 Fast Shipping
- 🇺🇸 Made in the USA
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If our products don't solve your (pool or spa-related) headaches, contact us for a 100% refund. Free shipping on all orders over $75!
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100% Paraben Free
Say goodbye to parabens that can potentially be harmful to your family. All of AquaDoc's chemicals are paraben and aluminum free.
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Always fantastic
Took the whole bottle
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.
Excellent PH Decreaser
This is excellent PH Decreaser for the hot tub. This is in liquid form and not the granules. Which is easier to get mixed into the hot tub. Works great! HIGHLY recommended!
Does a really good job
Works really quick
Works as it says
I tried this on a small 900 gallon pool and it works, but unfortunately we had to take the pool down because it wasn't heated and I live in Wisconsin. Maybe I'll put it up next summer and use this stuff again, it will still work.
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