Pool Algaecides / Chemicals & Water Testing Products - Mega Sale! Save up to 24%


Mega Sale! Up to 24% off on Pool Algaecides (in Chemicals & Water Testing Products) at Crystal Springs NC [55]. Top brands include Baquacil, BioGuard, EasyCare, United Chemicals, GLB, HTH, POOLIFE, Pool RX, Regal, Applied Biochemists, SeaKlear, & Durachlor. Hurry! Limited time offers. Offers valid only while supplies last.



Baquacil Algicide (1 qt) (2 Pack)
By Baquacil
In Stock
$32.99

ean: 0073187843265,

4.9 out of 5 stars with 25 reviews
BAQUACIL Algicide (1 qt) (2 Pack) is great at preventing a wide range of algae and slime. A simple weekly application is all that is needed to keep your water clear. Product Dosage Initial Dose: 5 1/4 fl oz per 10,000 gallons or water. Maintenance Dose: 1 1/4 fl oz per 10,000 gallons of water. Directions This product must be added directly into the water with the filter pump running. Swimming or bathers must wait 15 minutes before re-entry. Initial Dose: Add 5 1/4 fl oz of Baquacil Algicide per


BioGuard Off Season Winter Algicide 40% - Quart
By BioGuard
SKU: #24256BIO
In Stock
$24.99

sku: 24256BIO, mpn: 24256BIO, ean: 0017541001069,

4.9 out of 5 stars with 39 reviews
BioGuard Winter Algicide (1qt) Winter Algicide prevents and controls algae during the winter months when the pool is closed. Winter Algicide is one of the best ways to make closing and opening your pool as easy as possible. It is specially formualted to keep on fighting algae in cold or freezing temperatures and works best when the pool has been properly balanced and shocked.BioGuard Winter Algicide.


Fountec Fountain Algaecide Clarifier, 64 Ounce
By EasyCare
In Stock
$40.70

mpn: 4316397421,

4.6 out of 5 stars with 46 reviews
Fountec's organic polymers keep fountain and statuary water cleaner, clearer, and algae-free without chlorine and laborious scrubbing. This EPA registered product utilizes a unique control mechanism to kill and inhibit algae without harming the environment. Unaffected by heat, sunlight and evaporation, Fountec also outlasts and outperforms copper, enzyme and quat based products. A small dose of Fountec lasts up to a week or more and is very economical due to its concentrated formula. Fountec is


NO MORE PROBLEM 1 GALLON
By United Chemicals
In Stock
$64.99

mpn: HL25G, ean: 0730928003400,

4.8 out of 5 stars with 56 reviews
The United Chemical NMP4GAL No Mor Problems 1 Gallon Jug is an EPA-registered and patented preventative algaecide that will give you crystal clear swimming pool all season long. It has a patented formula that works with your sanitizer to unleash its full potential thereby keeping algae from ever growing and making sure your pool will stay clean and clear. It prevents all types of algae and bacteria in every type of swimming pool. It also acts as a clarifier and pool filter aid giving you the abi


GLB Algimycin 600 (1 qt) (2 Pack)
By GLB
In Stock
$38.92

mpn: 4316531998, ean: 0073100880377,

4.8 out of 5 stars with 30 reviews
GLB Algimycin 600 is a non-metallic, non-foaming, polymer-based algaecide that kills and controls green algae. This product does not require pool closing. It clears water with a filter aid that removes dead and living algae fast. This product contains no metals and has been proven not to harm pool liners. Algimycin 600 is compatible with chlorine, bromine, ozone, salt water pools, and biguanide sanitizers. Product Dosage Initial Treatment: 9 fl oz per 10,000 gallons of water. Routine Maintenance


HTH 67002 Qt Salt Pool Algaecide
By HTH
In Stock
$16.96

mpn: 67002, ean: 0073187670021,

4.5 out of 5 stars with 60 reviews
hth is here to help with our 4-step pool care and 3-step care program. Our 4-step color-coded system makes it easy to find the hth pool care products you need to enjoy sparkling, blue water all season. Our complete line of hth spa products ensures that you have crystal clear water so you can relax in your spa all year round. If you enjoy hth, check out other products from Lonza such as Leisure Time, Applier Biochemist, Pool life, and GTC.Swimming pool and spa Algaecide. Effective Green algae con


Poolife Defend Plus Algaecide - 1 qt.
By POOLIFE
In Stock
$29.99

mpn: 62076, ean: 0073187620767,

4.8 out of 5 stars with 50 reviews
Poolife Defend+(1 qt) not only treats and helps prevent green, black and yellow algae but it also clarifies your water. This algaecide is non foaming so it can be used in pools with attached water features and hot tubs. Product Dosage Intial Treatment for Clean Pools: 8-12 fl oz per 10,000 gallons of water. Intial Treatment for Pools with Algae: 16-24 fl oz per 10,000 gallons of water. Black Algae Control: 16 fl oz per 10,000 gallons of water. Maintenance Dose: 4-8 fl oz per 10,000 gallons of wa


United Chemicals SWAM-C12 Swamp Treat Pool Algae Eliminator, 1-Pound
By United Chemicals
In Stock
$24.79

mpn: UCCSWAMC12, ean: 0730928035265,

4.5 out of 5 stars with 60 reviews
This swamp treat is the most powerful algae killing formula for pools. Your pool will go from a green swamp to blue in few hours. As the filtration system kicks in swamp treat accelerates your chlorine's ability to fight algae blooms. 1-Pound bottle will treat up to 20,000 gallons of water. Non-toxic formula does not contain any metals. This product weighs 1-pound.Swamp treat pool algae eliminator. Most powerful algae killing formula for pools. Accelerates pool chlorine's ability to fight algae


PoolRx 400-1K Gallon Black Spa Unit
By Pool RX
In Stock
$28.95
$21.95
You Save: 24%

mpn: na, ean: 0700553010555,

4.1 out of 5 stars with 27 reviews
The for Spa's Black unit supports 400 - 1000 gallon spa's or fountains. is an easy to use algaecide that reduces chemical demand, improves water quality, lasts for up to 6 months, and really works! contains a proprietary blend of minerals that continuously and effectively eliminates algae. Simply start with fresh water and a clean filter and pick the correct sized Spa unit based on total gallons, then, drop the for Spa unit into the pump basket or skimmer. The specially treated alloy cylinder is


Regal Algaecide 60 for Swimming Pools & Spas
By Regal
In Stock
$32.99

mpn: 4332694120, ean: 0785336955261,

4.5 out of 5 stars with 23 reviews
Non-foaming, non-metallic 60% strength polyquat algaecide. Effective in preventing the growth of green, black, and mustard algae. Ideal for all-around use in pools with attached spas and water features. Algaecide 60 should be used on a regular basis.Concentrated algaecide for all types of algae. Should be part of a regular pool maintenance program to prevent algae. Weekly addition of this product will reduce overall maintenance costs and give pools desired water quality. The product of choice to


Applied Biochemists Swimtrine Plus (1 qt) (2 Pack)
By Applied Biochemists
In Stock
$44.30

ean: 0785336161013,

4.7 out of 5 stars with 40 reviews
It doesn't matter which algae you have, Swimtrine Plus kills them all! This concentrated copper algaecide quickly kills mustard and green algae and prevents all types of algae from recurring. Add a preventative dose bi-weekly and be algae free! Triple-chelated formula contains 9.3% copper.Kills green and mustard algae. Prevents regrowth of algae. Compatible with bromine, chlorine, salt water, ozone and mineral sanitizers. 2 Pack of Quarts.


GLB Strike Out (1 qt) (2 Pack)
By GLB
In Stock
$46.92

ean: 0785336711140,

4.3 out of 5 stars with 14 reviews
GLB Strike Out is a triple, chelated 7.4% copper algaecide that is designed to control green and mustard algae. This product is economical, concentrated, and long lasting. It is safe for use in all types of pools. There is no wait time required after use of this product. Strike Out can be used with chlorine, bromine, and ozone sanitizers, as well as salt water pools. Product Dosage Initial Treatment: 4 fl oz per 10,000 gallons of water. Routine Maintenance: 2 fl oz per 10,0000 gallons of water e


SeaKlear Algae Prevention & Remover - (4) 1 Quart Bottles
By SeaKlear
In Stock
$59.96

mpn: 2985Q4, ean: 0696859154638,

4.4 out of 5 stars with 29 reviews
Rely on Sea Klear to keep your pool clear and sparkling. Formulated with an extremely effective and economical low-dose organic copper complex that kills and prevents all types of algae including blue-green, black and mustard algae. Each application lasts up to 90 days.4 Pack SeaKlear 90-Day Algae Prevention & Remover 1 Quart (2 Quart Total). 90 day algae preventer and remover is non-foaming and non-staining. Kills and prevents green, yellow and black algae for up to three months. Reduces pool m


GLB Algimycin 3000 (1 qt) (2 Pack)
By GLB
In Stock
$49.92

ean: 0785336711058,

4.6 out of 5 stars with 58 reviews
GLB Algimycin 3000 kills and provides long lasting protection from green, yellow and black algae. Unlike other algaecides on the market Algimycin 300 contains 2 active ingredients, including zinc sulfate monohydrate. This algaecide is compatible with chlorine, bromine, salt water, ozone, biguanide and mineral sanitizing systems. Product Dosage Initial Dosage: 18 oz per 10,000 gallons of water. Maintenance Dosage: 6 oz per 10,000 gallons of water per week. Visible Algae Growth: 32 oz per 10,000 g


poolife Defend+ (1 qt) (2 Pack)
By POOLIFE
In Stock
$59.98

ean: 0073187620767,

4.5 out of 5 stars with 29 reviews
Poolife Defend+(1 qt) not only treats and helps prevent green, black and yellow algae but it also clarifies your water. This algaecide is non foaming so it can be used in pools with attached water features and hot tubs. Product Dosage Intial Treatment for Clean Pools: 8-12 fl oz per 10,000 gallons of water. Intial Treatment for Pools with Algae: 16-24 fl oz per 10,000 gallons of water. Black Algae Control: 16 fl oz per 10,000 gallons of water. Maintenance Dose: 4-8 fl oz per 10,000 gallons of wa


Poolife Algaecide 90 (1 qt) (2)
By POOLIFE
In Stock
$41.99

ean: 0073187620880,

4.6 out of 5 stars with 53 reviews
Poolife Algaecide 90 prevents algae growth for up to 3 months and prevents green and mustard algae. Swim in just 15 minutes after treatment. Dosage Opening Dose: 16 fl oz per 10,000 gallons of water. Visible Algae Dose: 16 fl oz per 10,000 gallons of water. Severe Algae Dose: 32 fl oz per 10,000 gallons of water. Maintenance Dose: 16 fl oz per 10,000 gallons of water every 3 months. Directions Method of Application: This is a concentrated product and it works best when added directly to the pool


BioGuard Algicide 28-40 (1 qt) (3 Pack)
By BioGuard
In Stock
$56.97

ean: 0017541637305,

4.4 out of 5 stars with 18 reviews
BioGuard Algicide 28-40 is used to prevent algae growth in your swimming pool. This economical algaecide may foam and may not be used with spa treatment or in pools with attached spas, water features, or jetted returns.Economic Pool Algaecide. Not for use with attached water features or hot tubs. 3 Pack.


HTH 61117-02 Super Algae Guard Algaecide for Swimming Pools, 1-Quart, 2-Pack
By HTH
In Stock
$49.52
$42.28
You Save: 15%

mpn: 61117--02, ean: 0034261008598,

4.1 out of 5 stars with 33 reviews
The HTH Super algae guard prevents & kills green, black, & yellow algae. Customers prefer this algaecide because it is non-foaming. Swim immediately after use. 60% strength. Initial dose is 4 osprey 10,000 gallon. Maintenance dose is 1 osprey 10,000 gallon every 3 - 5 days. 2 PackPrevents and kills Green, Black, and yellow algae. Non-foaming formula. Swim immediately after use. Convenient 2 pack.


Durachlor Haviland Combat 60 (1 qt) (3 Pack)
By Durachlor
In Stock
$67.13

ean: 0025551707611,

4.4 out of 5 stars with 10 reviews
The Durachlor Combat 60 product is a highly concentrated algaecide that will effectively remove algae as well as prevent it form forming in the future. Regular additions of this product will ensure clear water even into the off-season. Not only can this product be used in pools, but it can be used in spas, whirlpools, hot tubs, and decorative fountains.Eliminates and prevents algae formations. Creates crystal clear water. Reduces chlorine consumption. 3 Pack.


PoolRx Booster Minerals for Pool, 7500 to 20000 gallons,4 Pack
By Pool RX
In Stock
$134.07
$119.00
You Save: 11%

mpn: 102004, ean: 0700553237747,

4.5 out of 5 stars with 60 reviews
The PoolRx Booster (4 Pack) is a 6 month algaecide that's supports 7.5K - 20K gallon of pool water. The PoolRx Booster is used to replace PoolRx minerals contained in a PoolRx pool unit after 4-6 months of use. The PoolRx Booster is also used to increase the amount of minerals for pools larger than 20K gallon upon install of a new PoolRx pool unit. The PoolRx Booster minerals are the same minerals that are packed inside a PoolRx pool unit. Start with a new PoolRx unit at the beginning of each sw



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