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.

MSP Supply

Ph Down Pouch 2.5lbs - square crop

Ph Down Pouch 2.5lbs - square crop

MSP Supply

Ph Down Pouch 2.5lbs

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$6.25

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

Quantity

1

Description

Maintain perfect swimming conditions with the GLB pH Down Granular Dry Acid. This 2.5 lb pouch (MPN: 785336712529) offers a safer, more efficient alternative to liquid muriatic acid for correcting high pH levels. By balancing your water che...

Delivery & Returns

Returns accepted within 15 days

Exclusions may apply. See full policy

MSP Supply

4.8 (106)

You might also like

Automatic Acid Dispenser - square crop

MSP Supply

Automatic Acid Dispenser

JAG Pool Service And Supply

GLB Alkalinity Up 10lb

Pools of Fun

8# PH UP

GLB Granule Chlorinating Sanitizer 25 lb

Max Warehouse

GLB Granule Chlorinating Sanitizer 25 lb

Atlas Spas and Swim Spas

GLB Calcium Hardness Up - 8 lb bag

Yardandpool.com

GLB Triple Tab Chlorinating Tablets - 10 lbs

(1)

Pool Goods

GLB Calcium Hardness Up, 15 lb Bag | 71251A

50 lb Granular Algae Out Pail - square crop

MSP Supply

50 lb Granular Algae Out Pail

(1)

Yardandpool.com

GLB Algae-X Algaecide - 1 qt

GLB Vanquish Deposit Control 32 oz white plastic bottle with blue label showing pool design and product name in bold yellow and black text

Exclusive offer available

Poolaroo

GLB Vanquish Deposit Control, 32 oz Bottle | 71118A

Skim-A-Round

3.6

(808)

Pool Goods

GLB Algimycin 2000 1 qt / 32 oz|71104A

E-Z Clor Alkalinity Up - 5lbs - square crop

MSP Supply

E-Z Clor Alkalinity Up - 5lbs

Rapid-Dissolve Alkalinity Increaser Tabs 1" tablets (1.25 lb) - square crop

MSP Supply

Rapid-Dissolve Alkalinity Increaser Tabs 1" tablets (1.25 lb)

25 lb 3" Xtreme Tabs Wrapped Pail - square crop

MSP Supply

25 lb 3" Xtreme Tabs Wrapped Pail

(1)

Yardandpool.com

GLB pH Down - 2.5 lb

E-Z Clor 5 lb pH Up Pouch - Granular Pool pH Increaser - square crop

MSP Supply

E-Z Clor 5 lb pH Up Pouch - Granular Pool pH Increaser

Yardandpool.com

GLB Alkalinity Up - 10 lb

(1)

Yardandpool.com

GLB Stabilizer - 4 lb

A white plastic 25 lb pail labeled "GLB Supersonic 73% Cal Hypo Granular Chlorine Shock" by GLB, featuring a blue and yellow label, kills bacteria, controls algae, and works as a fast-dissolving pool sanitizer.

12% off

Pool Goods

GLB SuperSonic 73% Cal Hypo Pool Shock 25 lb|71440A

(12)

WaterGuru

4.6

(598)

digital pool water tester

digital pool water tester

WaterGuru SENSE 10" Skimmer Adapter

Poolzilla

GLB Large 3" Chlorine Tablets 50 lb Pail | 71236A

E-Z Clor 4 lb Clor Save Stabilizer Pouch (CYA) - square crop

MSP Supply

E-Z Clor 4 lb Clor Save Stabilizer Pouch (CYA)

PoolAndSpaFlow

GLB Supersonic 25lb.

Pool Goods

GLB Vanquish Algaecide 1 qt / 32 oz|71118A

(1)

JAG Pool Service And Supply

25# GLB Super Charge Shock

National Discount Pool Supplies, LLC

GLB Algimycin 2000 Algaecide 32 fl oz

Refresh+ 73% Calcium Hypochlorite Granular Pool Shock, 1 lb - square crop

MSP Supply

Refresh+ 73% Calcium Hypochlorite Granular Pool Shock, 1 lb

4 lb 3" 8 oz Big Tabs Unwrapped Sanitizer Pail - square crop

MSP Supply

4 lb 3" 8 oz Big Tabs Unwrapped Sanitizer Pail

25 lb Quick Dissolve Dichlor Sanitizer Pail - square crop

MSP Supply

25 lb Quick Dissolve Dichlor Sanitizer Pail

Riptide Pool Vacuum

4.9

(267)

Riptide Vacuum Bag

Riptide Vacuum Bag

Riptide SL Pool Vacuum

High Torque Motor

Control Panel Electrical Contacts

Alkalinity Control 5LB - square crop

MSP Supply

Alkalinity Control 5LB

(1)

Olympic Pools

GLB AlkalinityUp 10#

white 50 lb pail with red lid and handle containing GLB Large 3 inch chlorine tablets label includes pool illustration and usage details

Exclusive offer available

Poolaroo

GLB Large 3" Chlorine Tablets 50 lb Pail | 71236A

Swimmingpoolpartsonline.com

GLB Triple Tab Chlorinating Tablets - 10 lbs

Yardandpool.com

GLB PhosFight Plus - 1 qt

(1)

GLB Supersonic 73% Cal Hypo Granular Chlorine Shock, 1 lb Bag, 24/Case | 71442A

Ever-Klear Pool Supply

Shock | GLB | Supersonic Cal Hypo Shock | 73 Percent Calcium Hypochlorite | 1 Lb Bag

National Discount Pool Supplies, LLC

GLB Aqua Silk Chlorine-Free Sanitizer

(1)

National Discount Pool Supplies, LLC

GLB Aqua Silk Algaecide

GLB Algae-X 30% Polyquat Algaecide, 32 oz Bottle | 71100A

34% off

Pool Supply 4 Less

GLB Algae-X 30% Polyquat Algaecide, 32 oz Bottle | 71100A

GLB Algae-X 30 percent Polyquat algaecide in a white 32 ounce bottle with blue and green label and blue cap

Exclusive offer available

Poolaroo

GLB Algae-X 30% Polyquat Algaecide, 32 oz Bottle | 71100A

Aqua Silk Algaecide, 32 oz Bottle | 71267

Ever-Klear Pool Supply

Algaecide | High Strength Heavy Duty Formula | 32 Ounce Bottle | 1 Bottle | Aqua Silk

25 lb 3" 8 oz Big Tabs Sanitizer Unwrapped Pail - square crop

MSP Supply

25 lb 3" 8 oz Big Tabs Sanitizer Unwrapped Pail

Aquamax Chlorine Tablets 50lbs - square crop

MSP Supply

Aquamax Chlorine Tablets 50lbs

Pool Blue Clarifier 1qt - square crop

MSP Supply

Pool Blue Clarifier 1qt

Yardandpool.com

GLB pH Down - 10 lb

(3)

E-Z Clor 5 lb Alkalinity Up Pouch - Pool Total Alkalinity Increaser - square crop

MSP Supply

E-Z Clor 5 lb Alkalinity Up Pouch - Pool Total Alkalinity Increaser

English cottage touches

English cottage touches

Collected classics with country-house charm

Yardandpool.com

GLB Total Tab Chlorinating Tablets - 21 lb

GLB Dichlor Pool Shock 1 lb – Stabilized Chlorine granular pool chemical from Benchmark Pool Supply

Exclusive offer available

Benchmark Pool Supply

GLB Dichlor Pool Shock 1 lb – Stabilized Chlorine

Yardandpool.com

GLB Calcium Hardness Up - 8 lb

(1)

PH Indicator Solution R-0004 - square crop

MSP Supply

PH Indicator Solution R-0004

Yardandpool.com

GLB Nix Algaecide and Phosphate Remover - 1 qt

(4)

GLB Filter Rinse Sand Filter Cleaner - 1 qt - Yardandpool.com

Yardandpool.com

GLB Filter Rinse Sand Filter Cleaner - 1 qt

(1)

GLB Algimycin 2000 algaecide for effective algae control in swimming pools

3% off

EZ Pools

GLB Algimycin 2000 Pool Algaecide Treatment

(2)

GLB Algimycin 3000 Algaecide - 1 qt - Yardandpool.com

Yardandpool.com

GLB Algimycin 3000 Algaecide - 1 qt

(3)

32 oz GLB Surface & Waterline Cleaner (71028) features concentrated formula with a blue and yellow label, ideal for removing dirt and scale from pool surfaces.

Pool Goods

GLB TLC Surface and Waterline Cleaner 1 qt / 32 oz|71028A

50 lb 3" 8 oz Big Tabs Sanitizer Unwrapped Pail - square crop

MSP Supply

50 lb 3" 8 oz Big Tabs Sanitizer Unwrapped Pail

(1)

Algaecide Water Solution Up 4 Month 1qt - square crop

MSP Supply

Algaecide Water Solution Up 4 Month 1qt

25 lb O2 Shock Pail - square crop

MSP Supply

25 lb O2 Shock Pail

Clean Water Pools and Spas

GLB pH Up 8lbs

Rapid-Dissolve pH Decreaser Tabs 1" tablets (1.25 lb) - square crop

MSP Supply

Rapid-Dissolve pH Decreaser Tabs 1" tablets (1.25 lb)

(1)

GLB Large 3" Tablets - 4 lbs - Yardandpool.com

Yardandpool.com

GLB Large 3" Tablets - 4 lbs

GLB Supersonic 73% Cal Hypo Chlorine Granular Shock, 5 lb Bottle, 6/Case | 71450A

Ever-Klear Pool Supply

Cal Hypochlorite Granular Shock | GLB | Supersonic | 73 Percent Available Chlorine | 5 Lb

Exclusive offer available

Leisure Time Inc.

GLB 71239BIO Small 1" Chlorinating Tablets - 5 lb.

13% off

Water Works Pools, Hot Tubs & More

GLB 5 lb Supersonic Shock 73% Cal Hypo

Granular Trichlor 50LBS - square crop

MSP Supply

Granular Trichlor 50LBS

Bar cart basics

Bar cart basics

Carts, glassware, and bottle storage.

Krevco Lifestyles

GLB Clear Blue Clarifier 1 L

44% off

Pool Goods

GLB Natural Clear Enzyme Clarifier1 qt / 32 oz|71410A

35% off

TotalCare Pool

20.2 lb GLB Longevity Tablets Pail

Pool Goods

GLB Filter Fresh Cartridge Cleaner, 32 oz Bottle, 12/Case | 71010

50 lbs 3" Xtreme Tabs Pail - square crop

MSP Supply

50 lbs 3" Xtreme Tabs Pail

(1)

50 lb Quick Dissolve Dichlor Sanitizer Pail - square crop

MSP Supply

50 lb Quick Dissolve Dichlor Sanitizer Pail

8 lb 3" Big Tabs Sanitizer Unwrapped Pail - square crop

MSP Supply

8 lb 3" Big Tabs Sanitizer Unwrapped Pail

GLB Alkalinity Up 10 lb Bag 4/Case | 71245A

Ever-Klear Pool Supply

Alkalinity Up | GLB | 71245A

Swimmingpoolpartsonline.com

GLB Alkalinity Up - 10 lb

GLB Supersonic 73% Cal Hypo Granular Chlorine Shock, 25 lb Pail | 71440A

11% off

Ever-Klear Pool Supply

Calcium Hypochlorite Granules | 73 Percent | 25 Lb | 1 Pack | GLB

Pool Goods

GLB SuperSonic 73% Cal Hypo Pool Shock 5 lb|71450A

(1)

GLB Supersonic Shock 73 Cal Hypo - 1 lb - 71442A - The Pool Supply Warehouse

57% off

The Pool Supply Warehouse

GLB Supersonic Shock 73% Cal Hypo - 1 lb - 71442A

Swimmingpoolpartsonline.com

GLB Nix Algaecide and Phosphate Remover - 1 qt

7 Inch Floating Collapsible Chlorine and Bromine Tablet Dispenser Pool & Spa Chemical Dispenser Accessory - square crop

MSP Supply

7 Inch Floating Collapsible Chlorine and Bromine Tablet Dispenser Pool & Spa Chemical Dispenser Accessory

GLB Oxy-Brite Non-Chlorine Pool Shock 1 lb for pool treatment from Benchmark Pool Supply

Exclusive offer available

Benchmark Pool Supply

GLB Oxy-Brite Non-Chlorine Pool Shock 1 lb

Yardandpool.com

GLB TLC - 1 qt

GLB Algimycin 600 Algaecide, 32 oz Bottle | 71108A

Ever-Klear Pool Supply

Algaecide | GLB | 71108A | Algimycin 600 | 32 Oz Bottle

Pool Goods

GLB Algimycin 600 1 qt / 32 oz|71108A

1 lb O2 Shock Bag - square crop

MSP Supply

1 lb O2 Shock Bag

The curated dining table

The curated dining table

Dinnerware, glasses, and flatware.

Coral Chlor™ series salt chlorine system - square crop

MSP Supply

Coral Chlor™ series salt chlorine system

(2)

150-200 SqFt Clean & Clear Tank Bottom - square crop

MSP Supply

150-200 SqFt Clean & Clear Tank Bottom