
Yellow Out
Key item features
- Algae Cleanup: Yellow Out provides amazing cleanup results for yellow algae when used with an EPA-Registered chlorinating compound that targets green or mustard algae.
- Chemical Composition: This product is a chemical breakthrough with no metals added, making it safe for use with all pool surfaces.
- Performance Conditions: It remains effective even with high levels of cyanuric acid and is compatible with salt chlorine generators.
- Rapid Action: Achieves algae cleanup quickly, transforming pools from green to clean within 24 hours without the need for brushing.
- Usage Instructions: The recommended dosage is 2 lbs. per 15,000 gallons of water, with continuous filter operation for 24 hours post-application.
- Application Precautions: Yellow Out should not be pre-mixed with chlorine or other chemicals, nor added directly into skimmer baskets or filter suction lines.
- Algaecide Reduction: Regular use can help reduce the need for algaecides, which can potentially stain pool surfaces.
Specs
- Chemical standard typeAlgicide
- FormPowder
- Weight4.0 lbs
- Rec. useSwimming Pool
Reviews summary
- : Offers similar prices to other retailers.
- : Quickly eliminates yellow algae from pool walls and water.
- Free shipping
Free 30-day returns
How do you want your item?
About this item
Product details
Yellow Out - 2 x 2 lb.Achieves algae clean-up quickly and economically, from green to clean in 24 hours with no brushing. Guaranteed! Regular use of Yellow Out can also help reduce algaecide use that can stain pool surfaces. Recommended dosage: 2 lbs. per 15,000 gallons of water, concentrating on problem areas. Run filter continuously for 24 hours after adding. Yellow Out should never be pre-mixed with chlorine or other chemicals, nor should it be added directly into skimmer basket or filter suction line. Compatible with salt generators. Yellow Out - 2 x 2 lb.
- Amazing Yellow Algae Cleanup Results!
- Yellow Out is a chemical breakthrough! Amazing cleanup results when used prior to shock treatment with an EPA-Registered chlorinating compound that kills green or mustard algae.
- Not affected by high levels of cyanuric acid and works well with salt chlorine generators!
- NO metals added, can be used with ALL pool surfaces! Dosage: 2 lbs. per 15,000 gallons of pool water.
-
Warranty
Warranty information
Warnings
State Chemical Disclosure
Similar items you might like
Based on what customers bought
100+ bought since yesterday HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing $24.13 Was $29.99
100+ bought since yesterday
3 optionsAvailable in additional 3 optionsSponsoredNow$2413current price Now $24.13, Was $29.99$29.99You save $5.86You save$5.86More options from $4.81HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing
75104.6 out of 5 Stars. 7510 reviewsSave withPickup todayDelivery todayShipping, arrives todayHTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination $3.97
2 optionsAvailable in additional 2 optionsSponsored$397current price $3.97Options from $3.97 – $68.62HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination
7734.6 out of 5 Stars. 773 reviewsSave withShipping, arrives in 2 daysNatural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbs $29.99
3 optionsAvailable in additional 3 options$2999current price $29.99More options from $26.97Natural Chemistry Yellow Out Swimming Pool Stain Remover, 4 lbs
714.4 out of 5 Stars. 71 reviewsShipping, arrives in 3+ daysCoral Seas 17642COR Green Aid $23.99
$2399current price $23.99Coral Seas 17642COR Green Aid
243.3 out of 5 Stars. 24 reviewsShipping, arrives in 3+ daysUnited Chemicals YTP71 5oz Bag Yellow Treat $9.99 Was $12.11
Now$999current price Now $9.99, Was $12.11$12.11You save $2.12You save$2.12United Chemicals YTP71 5oz Bag Yellow Treat
163.8 out of 5 Stars. 16 reviewsShipping, arrives in 3+ daysUnited Chemicals Yellow Treat 2 Pound Container $23.78 Was $29.99
Now$2378current price Now $23.78, Was $29.99$29.99+$7.98 shippingYou save $6.21You save$6.21United Chemicals Yellow Treat 2 Pound Container
424.5 out of 5 Stars. 42 reviewsShipping, arrives in 3+ daysHTH Drop Out Flocculant — 28 oz Liquid Pool Clarifier — Removes Fine Particles to Clear Cloudy Water $12.44
3 optionsAvailable in additional 3 optionsSponsored$1244current price $12.44Options from $12.44 – $72.00HTH Drop Out Flocculant — 28 oz Liquid Pool Clarifier — Removes Fine Particles to Clear Cloudy Water
4054.5 out of 5 Stars. 405 reviewsSave withPickup todayDelivery todayShipping, arrives todayPoolRx+ Yellow/White 6-Month Swimming Pool & Spa Mineral Algaecide, 1 Tablet Treats 100-400 Gallons $14.74
2 optionsAvailable in additional 2 options$1474current price $14.74Options from $14.74 – $29.48PoolRx+ Yellow/White 6-Month Swimming Pool & Spa Mineral Algaecide, 1 Tablet Treats 100-400 Gallons
634.3 out of 5 Stars. 63 reviewsSave withPickup todayDelivery todayShipping, arrives todaySplash Liquid Pool Shock Chlorinator 10% Sodium Hypochlorite for Algae and Bacteria Control $5.67
2 optionsAvailable in additional 2 options$567current price $5.67Options from $5.67 – $11.34Splash Liquid Pool Shock Chlorinator 10% Sodium Hypochlorite for Algae and Bacteria Control
2114.6 out of 5 Stars. 211 reviewsSave withPickup todayDelivery todayShipping, arrives todayClorox Pool&Spa Filter Cleaner Spray for Swimming Pools Liquid Pool Clarifier Chemicals, 32 oz Bottle $11.64 36.4 ¢/fl oz
$1164current price $11.6436.4 ¢/fl ozClorox Pool&Spa Filter Cleaner Spray for Swimming Pools Liquid Pool Clarifier Chemicals, 32 oz Bottle
1524.5 out of 5 Stars. 152 reviewsSave withPickup todayDelivery todayShipping, arrives todayDoheny's Sand Filter Cleaner - 1 Qt. for Swimming Pools $21.99
2 optionsAvailable in additional 2 options$2199current price $21.99Options from $21.99 – $79.96Doheny's Sand Filter Cleaner - 1 Qt. for Swimming Pools
234.4 out of 5 Stars. 23 reviewsShipping, arrives in 3+ daysDoheny's pH Plus for Swimming Pools- 25 lb. Bucket $45.74
4 optionsAvailable in additional 4 options$4574current price $45.74More options from $17.99Doheny's pH Plus for Swimming Pools- 25 lb. Bucket
2724.7 out of 5 Stars. 272 reviewsShipping, arrives in 3+ daysJack's Magic The Step Stuff $36.49
5 optionsAvailable in additional 5 options$3649current price $36.49Options from $36.49 – $294.99Jack's Magic The Step Stuff
94.2 out of 5 Stars. 9 reviewsShipping, arrives in 3+ days(2 pack) HTH Drop Out Flocculant — 28 oz Liquid Pool Clarifier — Removes Fine Particles to Clear Cloudy Water $24.88
$2488current price $24.88(2 pack) HTH Drop Out Flocculant — 28 oz Liquid Pool Clarifier — Removes Fine Particles to Clear Cloudy Water
Save withPickup todayDelivery todayShipping, arrives todayDoheny's Super Algaecide for Swimming Pools - 40 oz. Bottle $19.16
3 optionsAvailable in additional 3 options$1916current price $19.16Options from $19.16 – $188.96Doheny's Super Algaecide for Swimming Pools - 40 oz. Bottle
3264.7 out of 5 Stars. 326 reviewsShipping, arrives in 3+ daysGLB Strike-Out Algaecide for Green & Mustard Algae in Swimming Pools, 32 oz $30.15
$3015current price $30.15GLB Strike-Out Algaecide for Green & Mustard Algae in Swimming Pools, 32 oz
54.4 out of 5 Stars. 5 reviewsShipping, arrives in 3+ daysNatural Chemistry Chemistry 4 lb Green to Clean Algaecide $29.53
$2953current price $29.53Natural Chemistry Chemistry 4 lb Green to Clean Algaecide
22.5 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysClorox Pool&Spa Awesome Algaecide for Treating Algae Liquid Pool Algae Chemical Controllers, 32 oz $16.30
2 optionsAvailable in additional 2 options$1630current price $16.30Options from $16.30 – $48.90Clorox Pool&Spa Awesome Algaecide for Treating Algae Liquid Pool Algae Chemical Controllers, 32 oz
12374.5 out of 5 Stars. 1237 reviewsSave withPickup todayDelivery todayShipping, arrives today
Frequently bought together
Yellow Out $29.49

Yellow Out
Mainstays Plastic Pool Surface Skimmer $24.88

Mainstays Plastic Pool Surface Skimmer
Gazechimp Pool Brush Cleaning Brush s Inground Swimming Pools above Ground Pool $11.99

Gazechimp Pool Brush Cleaning Brush s Inground Swimming Pools above Ground Pool
Customer ratings & reviews
Reviews summary
- : Offers similar prices to other retailers.
- : Quickly eliminates yellow algae from pool walls and water.
Showing 1-3 of 43 reviews
Verified Purchase
Struggled with my pool for years. Once I determined it was mustard or yellow algae this product made all the difference. Only issue was determining and measuring the correct amount as my pool is smaller and I needed less than the container. However, I figured it out and this solved my problems. Now my pool is looking fantastic, my water stays balanced and I use far less chemicals in my pool maintenance now. Great product
Verified Purchase
Yellow Out Algaecide Eliminator
Yellow Out Pool Algaecide is the best product on the market for eliminating that yellow Algae that accumulates in pools, it's easy to use, fast acting, price is very fair and great shipping time. It's easy to place an order using Walmart .com shopping on line.
Verified Purchase
Works
Follow the instructions 100% and it will work. Yellow algae gone and I have a 20x40ft pool. Make sure you have the shock and chlorine ready to go.
Popular items in this category
Best selling items that customers love
HTH 3-inch Chlorine Tablets — Tablet, 25 lb — Pool Sanitizer for Routine Chlorination $127.00 31.8 ¢/oz
Sponsored$12700current price $127.0031.8 ¢/ozHTH 3-inch Chlorine Tablets — Tablet, 25 lb — Pool Sanitizer for Routine Chlorination
364.8 out of 5 Stars. 36 reviewsSave withShipping, arrives tomorrow50+ bought since yesterday HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools $5.97
50+ bought since yesterday
Sponsored$597current price $5.97HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools
6494.6 out of 5 Stars. 649 reviewsSave withPickup todayDelivery todayShipping, arrives todayCoral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs. $19.89
4 optionsAvailable in additional 4 options$1989current price $19.89Options from $19.89 – $149.99Coral Seas YELLOWOUT Yellow Out Pool Algaecide 2 Lbs.
724.3 out of 5 Stars. 72 reviewsShipping, arrives in 3+ daysSepticfit Calcium Hypochlorite Tablets Pool Chemicals, 6 Count (4 Pack) $98.95
$9895current price $98.95Septicfit Calcium Hypochlorite Tablets Pool Chemicals, 6 Count (4 Pack)
94.3 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysHTH Pool Care 3" Chlorine Tabs for Swimming Pools, Pool Chemicals, 25 lbs $134.95
$13495current price $134.95HTH Pool Care 3" Chlorine Tabs for Swimming Pools, Pool Chemicals, 25 lbs
1424.9 out of 5 Stars. 142 reviewsShipping, arrives in 3+ daysHTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & Bacteria $61.47
$6147current price $61.47HTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & Bacteria
1664.9 out of 5 Stars. 166 reviewsShipping, arrives in 3+ days50+ bought since yesterday HTH 1 Inch Chlorine Tablets 1.5 lb Pool Sanitizer for Algae and Bacteria Prevention $15.15
50+ bought since yesterday
$1515current price $15.15HTH 1 Inch Chlorine Tablets 1.5 lb Pool Sanitizer for Algae and Bacteria Prevention
13334.7 out of 5 Stars. 1333 reviewsSave withPickup todayDelivery todayShipping, arrives todayHTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae Control $35.97 45.0 ¢/oz
Sponsored$3597current price $35.9745.0 ¢/ozHTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae Control
804.6 out of 5 Stars. 80 reviewsSave withShipping, arrives tomorrowHTH Brilliance Cal Hypo Chlorine Tablets for Swimming Pools, Chlorine Pool Chemicals, 4.75lb $40.47 Was $54.66 53.3 ¢/oz
SponsoredNow$4047current price Now $40.47, Was $54.66$54.6653.3 ¢/ozYou save $14.19You save$14.19HTH Brilliance Cal Hypo Chlorine Tablets for Swimming Pools, Chlorine Pool Chemicals, 4.75lb
2944 out of 5 Stars. 294 reviewsSave withPickup todayDelivery todayShipping, arrives todayCaribbean Blue Phos Out Phosphate Remover $29.99
$2999current price $29.99Caribbean Blue Phos Out Phosphate Remover
Shipping, arrives in 3+ days(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools $11.94
$1194current price $11.94(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools
Save withPickup todayDelivery todayShipping, arrives todayBioGuard SilkGuard Complete Chlorine Pool Chemicals, 3.5 lbs $44.99
$4499current price $44.99BioGuard SilkGuard Complete Chlorine Pool Chemicals, 3.5 lbs
74.6 out of 5 Stars. 7 reviewsShipping, arrives in 3+ daysHTH Metal & Stain Defense Liquid Pool Chemical, Stain Preventer, For All Pool Types, 1 Qt $27.16
$2716current price $27.16HTH Metal & Stain Defense Liquid Pool Chemical, Stain Preventer, For All Pool Types, 1 Qt
124.5 out of 5 Stars. 12 reviewsShipping, arrives in 3+ daysIn The Swim Opening Kit and Chlorine Pool Chemicals Bundle, 50 lbs $242.98
5 optionsAvailable in additional 5 options$24298current price $242.98More options from $69.98In The Swim Opening Kit and Chlorine Pool Chemicals Bundle, 50 lbs
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysBioGuard Algae All 60 Pool Algae Chemical Controllers, 1 Quart $39.99
$3999current price $39.99BioGuard Algae All 60 Pool Algae Chemical Controllers, 1 Quart
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysAqua Pure International REV32 32 oz Revive Phosphate & Algae Remover Chemical Green Swimming Pools $54.99
$5499current price $54.99Aqua Pure International REV32 32 oz Revive Phosphate & Algae Remover Chemical Green Swimming Pools
43 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysIn The Swim Pool Chlorine Stabilizer and Conditioner 10 Pound Bag $61.74
4 optionsAvailable in additional 4 options$6174current price $61.74More options from $40.84In The Swim Pool Chlorine Stabilizer and Conditioner 10 Pound Bag
324.3 out of 5 Stars. 32 reviewsShipping, arrives in 3+ daysBest seller Pool Essentials Chlorinating Liquid for Swimming Pools, 1 Gallon ( 5 Packs ) $79.99
Best seller
2 optionsAvailable in additional 2 options$7999current price $79.99Pool Essentials Chlorinating Liquid for Swimming Pools, 1 Gallon ( 5 Packs )
7514.7 out of 5 Stars. 751 reviewsShipping, arrives in 3+ daysPoolife NST Prime Tablets 20.2 lb. $157.49
$15749current price $157.49Poolife NST Prime Tablets 20.2 lb.
234.7 out of 5 Stars. 23 reviewsShipping, arrives in 3+ days
Check out these related products
HTH Green to Blue Pool Shock Kit — Granules (Form), 4 lb — Pool Shock Treatment for Algae Removal and Water Clarification $28.44
2 optionsAvailable in additional 2 optionsSponsored$2844current price $28.44HTH Green to Blue Pool Shock Kit — Granules (Form), 4 lb — Pool Shock Treatment for Algae Removal and Water Clarification
17414.2 out of 5 Stars. 1741 reviewsSave withPickup todayDelivery todayShipping, arrives todayJack's Magic The Blue Stuff Stain Remover Pool Chemicals, 32 fl oz $26.49
3 optionsAvailable in additional 3 options$2649current price $26.49Jack's Magic The Blue Stuff Stain Remover Pool Chemicals, 32 fl oz
83.9 out of 5 Stars. 8 reviewsShipping, arrives in 3+ daysBAQUACIL Flocculant For Cloudy Pools $15.74
$1574current price $15.74BAQUACIL Flocculant For Cloudy Pools
44 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysJack's Magic JMPURPLE032 The Purple Stuff, 32 Ounce $32.10 $1.00/oz
$3210current price $32.10$1.00/ozJack's Magic JMPURPLE032 The Purple Stuff, 32 Ounce
35 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysGLB Sequa-Sol Sequestering Agent 32 oz Prevents Stains & Scale in Swimming Pools $30.15
$3015current price $30.15GLB Sequa-Sol Sequestering Agent 32 oz Prevents Stains & Scale in Swimming Pools
Shipping, arrives in 3+ daysSwamp Treat Algae Killer Power Pool Chemical, 1 lb $24.99
2 optionsAvailable in additional 2 options$2499current price $24.99Options from $24.99 – $42.98Swamp Treat Algae Killer Power Pool Chemical, 1 lb
22.5 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysRx Clear Calcium Hardness Increaser for Swimming Pools, 25 lbs $54.98
3 optionsAvailable in additional 3 options$5498current price $54.98Rx Clear Calcium Hardness Increaser for Swimming Pools, 25 lbs
664.7 out of 5 Stars. 66 reviewsNatural Chemistry Stain Free Swimming Pool Spa Cleaner - 1.75 lbs - 4 Pack $114.97
$11497current price $114.97Natural Chemistry Stain Free Swimming Pool Spa Cleaner - 1.75 lbs - 4 Pack
Shipping, arrives in 3+ days
