Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

The Spa Guys

Aqua nexxt pH decreaser granular pouch for pool water, lavender white resealable

Aqua nexxt pH decreaser granular pouch for pool water, lavender white resealable

The Spa Guys

pH Decreaser Granular

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

NZ$17.94

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shopping designed around you.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Purchase at The Spa Guys

Description

Aqua Health Decreaser is the Perfect Solution for Pool Water Balance and is a safer alternative to hydrochloric acid (liquid Pool Acid), to reduce the pH and lower the total alkalinity in the pool water.
Benefits
Aqua Health pH Decreaser ...

Delivery & Returns

Visit The Spa Guys for full shipping details

Shipping calculated at checkout

The Spa Guys

4.9 (12)

You might also like

Red-capped Insta 4-in-1 test strips for pool chlorine pH hardness

The Spa Guys

Insta 4-in-1 Test Strips

Aqua Health 2kg purple white alkalinity increaser pouch for pools

The Spa Guys

Alkalinity Increaser (Bi-Carb)

Poppits Peroxsil 395 chlorine free spa pool sanitiser bottle

The Spa Guys

Poppits Peroxsil 395 Chlorine Free Spa Pool Sanitiser - Chlorine FREE

(1)

Poppit Spa Complete 1L white plastic bottle of pool & spa clarifier

The Spa Guys

Poppit Spa Complete Pool & Spa Maintenance

215 x 125mm Vortex Pleated Camlock Filter with blue rims, NZ stock

The Spa Guys

215 x 125Mm Vortex Pleated Camlock Filter

340 x 126 Rainbow RDC 25 blue-topped cartridge NZ stock

The Spa Guys

340 x 126 Rainbow Rdc 25 Replacement Cartridge

pH Decreaser for Hot Tub - AquaDoc

15% off

AquaDoc

pH Decreaser for Hot Tub

(1)

AquaChek 4-in-1 test strips in yellow blue pack, NZ stock

The Spa Guys

AquaChek 4-in-1 Test Strips

Whirlpool Warehouse

pH Down - 1Kg

mySpa STORE

pH Down 500gm

Lavender navy resealable 20g pH increaser pouch, NZ stock for pool water

The Spa Guys

pH Increaser (Soda Ash) 2kg

Aqua Health Spa Pool Chlorine 500g jar with teal label

The Spa Guys

Spa Pool Chlorine

Pink navy resealable 2kg Aqua Health Sunscreen pouch NZ stock

The Spa Guys

Sunscreen

Aqua health stabilised pool tablets in white container for pool water

The Spa Guys

Stabilised Chlorine Tablets

White pleated filter cartridge with blue end caps for 265 x 150 Hot Spring spa systems replacement

The Spa Guys

265 x 150 Hot Spring C30/Spa Systems Replacement Cartridge

The Spa Supply Store by Jacuzzi® Hot Tubs of the Triangle

Natural Chemistry Spa pH Decreaser (3.37lbs)

Bar cart basics

Bar cart basics

Carts, glassware, and bottle storage.

pH Down - Coast Spas Hot Tubs

Coast Spas Hot Tubs

pH Down

Softcare pH and alkalinity down 1.5 lbs for spa and hot tub water balance

H2O Outlet

Softcare pH & Alkalinity Down (1.5 lbs) – Spa & Hot Tub pH Decreaser

Natural Chemistry Spa pH Decreaser - 3.37 lb - Yardandpool.com

Yardandpool.com

Natural Chemistry Spa pH Decreaser - 3.37 lb

Living room glow up

Living room glow up

Chic lighting, side tables, and linen layers.

Aqua Health Ultra Shock 1kg chlorine-free pool water shock jar

The Spa Guys

Ultra Shock - Chlorine Free

The Spa Guys

Poppit Peroxsil Start Up kit for Spas - Chlorine FREE

Poppits One Step Water Prep jug with white body, red cap, blue label

61% off

The Spa Guys

Poppits One Step Water Prep

NZ$29.00NZ$74.00

Vortex Purezone 215x125mm camlock filter with blue cap and black core

24% off

The Spa Guys

215 x 125Mm Vortex Purezone Camlock Filter

NZ$45.00NZ$59.00

Universal 2.0Kw Incoloy heater element with U-shaped design, NZ stock

The Spa Guys

Universal 2.0Kw Incoloy Heater Element

Premier Pool & Spa

Natural Chemistry 14203NCM Spa pH Decreaser 3.37lb Bottle

1 Quart Of WATER TRENDS Spa pH Down - The Great Escape

40% off

The Great Escape

1 Quart Of WATER TRENDS Spa pH Down

Freshwater pH/Alkalinity Decreaser,

Shopspasupplies

Freshwater pH/Alkalinity Decreaser,

AMS PH & Alkalinity Decrease

Outdoor Rooms by Design

AMS PH & Alkalinity Decrease

(1)

Aqua Health Hardness Increaser 2kg pouch for pools and spas

The Spa Guys

Hardness Increaser (Cal-Chloride)

204 x 148 Waterway Sapphire universal wide mouth white pleated filter cartridge NZ stock

The Spa Guys

204 x 148 Waterway/Sapphire Universal Wide Mouth

White pleated pool filter with blue rings, Spa-Quip Sq50 Sq100 replacement, NZ stock

The Spa Guys

230 x 145 Spa-Quip Sq50 / Sq100 Skimmer(Q1259) Replacement Cartridge

English cottage touches

English cottage touches

Collected classics with country-house charm

The Spa Guys

Nature 2 Spa Stick

Aqua Health heavy duty algaecide clarifier 1L bottle metal free

The Spa Guys

Metal Free Algaecide & Clarifier 1 Litre

1 Quart Of WATER TRENDS Spa pH Down - WaterTrendsStore - 584

40% off

WaterTrendsStore

1 Quart Of WATER TRENDS Spa pH Down

Spa Essentials pH Decreaser - Leisure Time Inc.

Leisure Time Inc.

Spa Essentials pH Decreaser - 22 oz.

pH Decreaser For Pools - AquaDoc

21% off

AquaDoc

pH Decreaser For Pools

Direct Chems

Sodium Bisulphate (pH Minus & Alkalinity Reducer)

Aqua Health metal control and condition solution 1L bottle

The Spa Guys

Metals Control & Condition 1 Litre

Poppit spa pipe degreaser white bottle with blue green label

The Spa Guys

Poppit Spa Pipe Degreaser

AquaChek Select Connect 7-in-1 test strip kit with 50 strips in yellow cap container

The Spa Guys

AquaChek Select Connect 7-in-1 Test Strip Kit - Used With Smart Phone App - NEW

Blue plastic-capped Freeflow CH46 replacement cartridge with white pleats

The Spa Guys

225 x 135 Hot Spring Freeflow CH46 Replacement Cartridge

210 x 127 O2 Spas/Votex 400 Purezone filter cartridge, NZ stock

The Spa Guys

210 x 127 O2 Spas/Votex 400 Purezone Cartridge

Spa safe printed tape roll with beige tape, pink branding, yellow core, green logos

The Spa Guys

Spa Safe Printed Tape

Alkalinity & pH Down

SpaDepot.com

Alkalinity & pH Down

(10)

ProTeam pH Decreaser - 1.5 lb. - Leisure Time Inc.

Leisure Time Inc.

ProTeam pH Decreaser (Granular) - 1.5 lb.

Hot Tub Things

Hot Tub Things® pH & Alkalinity Down (1.25 lb) – Granular Spa Water Reducer

Hot Tub Things

FROG® DropH™ pH & Total Alkalinity Decreaser (3 lb)

Poppit Peroxsil 4-way test strips NZ stock, white container with tests for pH, alkalinity, peroxide, hardness

The Spa Guys

Poppit Peroxsil 4 Way Test Strips (50 pack)

Aqua Health natural filter cleaner 1L white bottle with label

The Spa Guys

Natural Filter Cleaner 1 Litre

Red sanosil test strips by Poppits, NZ stock for pool spa testing

29% off

The Spa Guys

Poppits Peroxsil 3 Way Test Strips (50 pack)

NZ$49.00NZ$69.00

White plastic Crystal Water filter cleaner jug, NZ stock for spas

The Spa Guys

Spa Pool Chlorine Chemical Startup Kit - Inc. Filter Cleaner

Marquis Spas 275 x 132 50 replacement cartridge filter NZ stock

The Spa Guys

275 x 132 Marquis Spas 50 Replacement Cartridge

20% off

Atlanta Hot Tub Center

Ph Decreaser

Hot Tub Warehouse

Natural Chemistry Spa pH Decreaser - 3.37 Pounds

(1)

105 x 108 Mspa replacement cartridge gray blue filter NZ stock

51% off

The Spa Guys

105 x 108 Mspa Replacement Cartridge

NZ$19.00NZ$39.00

5L white plastic jug of Salt Cell Cleaner with aqua health label

The Spa Guys

Salt Cell Cleaner 5 Litre