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Chemicals & Water Testing Products - On Sale Now! Save up to 8%


On Sale! Up to 8% off on Chemicals & Water Testing Products at Knock Knock. Top brands include Jack's Magic, Baqua Spa, King Technology, Pool RX, & Orenda Technologies. Hurry! Limited time offers. Offers valid only while supplies last.



Jack's Magic The Copper & Scale Stuff Stain Solution #2 (10 lb) (2 Pack)
Jack's Magic The Copper & Scale Stuff Stain Solution #2 (10 lb) (2 Pack)
In Stock
$112.84

ean: 0734040558510,

Jack's Magic's The Copper & Scale Stuff Stain Solution 2 provides pool owners with an easy and effective way to remove copper stains and scale buildup, while being more effective than acid-washing your pool. Stain Solution 2's powerful formula cuts t...


Jack's Magic The Magenta Stuff (1 qt) (12 Pack)
Jack's Magic The Magenta Stuff (1 qt) (12 Pack)
In Stock
$199.49

ean: 0734040080073,

Jack's Magic The Magenta Stuff is a great choice for any pool, preventing and removing ugly metal staining and scale buildup. Its powerful liquid formula is a sequestering agent that binds together any dissolved metals and calcium that can cause prob...


Baqua Spa Surface Cleaner (12)
Baqua Spa Surface Cleaner (12)
In Stock
$115.95
$115.93

ean: 0073187888518,

BAQUA SPA Surface Cleaner (1 pt) aids in the removal of waterline buildup. This is a highly concentrated gel that removes dirt, oils, stains and other contaminates at the water line. This product is safe for all types of spa shells.Removes waterline ...


Baqua Spa Foam Disperser with Vitamin E (1 pt) (12 Pack)
Baqua Spa Foam Disperser with Vitamin E (1 pt) (12 Pack)
In Stock
$123.15
$123.14

ean: 0073187838018,

BAQUA SPA Foam Disperser with Vitamin E (1 pt) helps to reduce the foaming in your BAQUA SPA treated hot tub. Specially treated with vitamin E to promote a skin-soothing spa experience with no foam.Reduces Spa Foaming. 1/4 fl oz per 150 gallons of sp...


Baqua Spa Spa Shield (1 pt) (12 Pack)
Baqua Spa Spa Shield (1 pt) (12 Pack)
In Stock
$120.94
$120.93

ean: 0073187888396,

BAQUA SPA Spa Shield (1 pt) helps to restore water clarity using natural enzymes. The enzymes break down oils, lotions and other organics in the water that can cause scumline build-up, odors and clogged filters.Restores water clarity using natural en...


Baqua Spa Oxidizer (1 qt) (12 Pack)
Baqua Spa Oxidizer (1 qt) (12 Pack)
In Stock
$161.88

ean: 0073187888372,

BAQUA SPA Oxidizer (1 qt) is a liquid oxidizer designed to shock and clarify your spa. This hydrogen peroxide formula keeps your spa sparkling clear without the use of chlorine or bromine. This is step 2 of the BAQUA SPA system.Step of the Baqua Spa ...


Baqua Spa Waterline Control (1 qt) (12 Pack)
Baqua Spa Waterline Control (1 qt) (12 Pack)
In Stock
$227.87

ean: 0073187888389,

BAQUA SPA Waterline Control (1 qt) is step 1 of the BAQUA SPA 3-part system. This patented formula helps prevent waterline deposits on the spa surface.Step 1 of the Baqua Spa System. Prevents waterline deposits. 12 Pack. ...


KING 01035613 540C In Ground Pool Frog Cycler Pac, 7 lbs, Pack of 3
KING 01035613 540C In Ground Pool Frog Cycler Pac, 7 lbs, Pack of 3
In Stock
$149.99
$140.85
You Save: 6%

mpn: 01035613, ean: 0852669628077,

4.4 out of 5 stars with 34 reviews
The ultimate delivery of hassle-free water care for in ground pools up to 40,000 gallons. Designed using FROG's No-Touch delivery system, water stays clean and clear for weeks at a time with no daily dosing or heavy chlorine odors because chlorine us...


PoolRx Booster Minerals for Pool, 7500 to 20000 gallons,4 Pack
PoolRx Booster Minerals for Pool, 7500 to 20000 gallons,4 Pack
In Stock
$129.02
$124.99
You Save: 3%

mpn: 102004, ean: 0700553237747,

4.5 out of 5 stars with 48 reviews
The 4pack of PoolRx Boosters is just that. 4 individual Boosters, each supports 7,500 -20,000 gallons. The Booster is used to replace minerals after 4-6 months. It is also used to increase the amount of minerals for pools larger than 20,000 gallons. ...


Orenda Technologies PR-10000 Phosphate Remover - 1 gal
Orenda Technologies PR-10000 Phosphate Remover - 1 gal
In Stock
$138.45
$127.00
You Save: 8%

mpn: PR-10,000, ean: 0757901739156,

4.4 out of 5 stars with 28 reviews
Phosphates enter your swimming pool through rainwater, soil and mineral run-off, animal and human contamination. Phosphates are a major food source for algae. As phosphate levels increase in your swimming pool, the likelihood of an algae bloom does a...



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