Fish Conditioner(294)
Uses item details. Price when purchased online
Aqueon AquaPacs Water Conditioner 4-Pack From $7.95
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From$795
Aqueon AquaPacs Water Conditioner 4-Pack
554.5 out of 5 Stars. 55 reviews
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Fish Pond Water Conditioner - Convert tap water to fish-friendly pond water - AquaDoc Pond Supplies $33.99
Sponsored
$3399
current price $33.99Fish Pond Water Conditioner - Convert tap water to fish-friendly pond water - AquaDoc Pond Supplies
44.8 out of 5 Stars. 4 reviews
100+ bought since yesterday Tetra AquaSafe Fish Tank Aquarium Water Conditioner, 8.45-Ounce From $9.32
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From$932
Tetra AquaSafe Fish Tank Aquarium Water Conditioner, 8.45-Ounce
5824.8 out of 5 Stars. 582 reviews
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Aqueon AquaPacs Sludge Remover 4-Pack From $6.50
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From$650
Aqueon AquaPacs Sludge Remover 4-Pack
484.6 out of 5 Stars. 48 reviews
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100+ bought since yesterday Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, 3.3 oz. From $5.52
3 options
Available in additional 3 optionsFrom$552
Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, 3.3 oz.
6014.7 out of 5 Stars. 601 reviews
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50+ bought since yesterday Tetra BettaSafe Aquarium Water Conditioner for Bettas, 1.69 oz From $5.52
4 options
Available in additional 4 optionsFrom$552
Tetra BettaSafe Aquarium Water Conditioner for Bettas, 1.69 oz
2594.6 out of 5 Stars. 259 reviews
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100+ bought since yesterday Tetra AquaSafe Fish Tank Aquarium Water Conditioner, 8.45-Ounce From $9.32
4 options
Available in additional 4 optionsFrom$932
Tetra AquaSafe Fish Tank Aquarium Water Conditioner, 8.45-Ounce
5824.8 out of 5 Stars. 582 reviews
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Best seller Tetra EasyBalance pH and Alkalinity Regulator Aquarium Water Conditioner, 3.38 oz From $6.27
4 options
Available in additional 4 optionsFrom$627
Tetra EasyBalance pH and Alkalinity Regulator Aquarium Water Conditioner, 3.38 oz
2354.2 out of 5 Stars. 235 reviews
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API Stress Coat Water Conditioner & Dechlorinator, 8 fl oz - Makes Tap Water Safe for Freshwater, & Saltwater Aquariums From $10.63
4 options
Available in additional 4 optionsFrom$1063
API Stress Coat Water Conditioner & Dechlorinator, 8 fl oz - Makes Tap Water Safe for Freshwater, & Saltwater Aquariums
2134.8 out of 5 Stars. 213 reviews
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Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, Treats 500 Gallons,16.9 oz. From $15.57
4 options
Available in additional 4 optionsFrom$1557
Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, Treats 500 Gallons,16.9 oz.
4314.8 out of 5 Stars. 431 reviews
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Seachem De-Nitrate - Nitrate Remover [Aquarium, Water Conditioners] 34 oz $35.64
![Seachem De-Nitrate - Nitrate Remover [Aquarium, Water Conditioners] 34 oz](https://i5.walmartimages.com/seo/Seachem-De-Nitrate-Nitrate-Remover-Aquarium-Water-Conditioners-34-oz_941ac1f9-f357-4bae-90de-20bb966d4327.f0950b56ef995fb23a6a395091a193a0.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$3564
current price $35.64Seachem De-Nitrate - Nitrate Remover [Aquarium, Water Conditioners] 34 oz
25 out of 5 Stars. 2 reviews
Tank Pals: Cletus The Water Conditioning Clam - 1 Pack, Blue - Fish Tank & Aquarium Water Preparation, Chlorine Neutralizer & Heavy Metal Filtration From $9.09
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From$909
Tank Pals: Cletus The Water Conditioning Clam - 1 Pack, Blue - Fish Tank & Aquarium Water Preparation, Chlorine Neutralizer & Heavy Metal Filtration
24 out of 5 Stars. 2 reviews
AQUARIAN Stress Barrier From $8.98
3 options
Available in additional 3 optionsFrom$898
AQUARIAN Stress Barrier
444.8 out of 5 Stars. 44 reviews
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API TAP WATER CONDITIONER, 16 OZ From $12.98
2 options
Available in additional 2 optionsFrom$1298
API TAP WATER CONDITIONER, 16 OZ
1464.8 out of 5 Stars. 146 reviews
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Tetra AquaSafe, Aquarium Water Conditioner, Makes Tap Water Safe, 3.38 oz. $6.32 73.1 ¢/ea
$632
current price $6.3273.1 ¢/ea
Tetra AquaSafe, Aquarium Water Conditioner, Makes Tap Water Safe, 3.38 oz.
174.5 out of 5 Stars. 17 reviews
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Best seller Tetra Fauna AquaSafe Water Conditioner for Reptiles & Amphibians, Makes Tap Water Safe, 3.08 oz. From $5.52
4 options
Available in additional 4 optionsFrom$552
Tetra Fauna AquaSafe Water Conditioner for Reptiles & Amphibians, Makes Tap Water Safe, 3.08 oz.
1844.6 out of 5 Stars. 184 reviews
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Aqueon Aquarium Water Conditioner Bottle 16 Fluid Ounces $11.49 Was $13.29 71.8 ¢/fl oz
Now$1149
current price Now $11.49, Was $13.29$13.29
71.8 ¢/fl oz
Aqueon Aquarium Water Conditioner Bottle 16 Fluid Ounces
844.8 out of 5 Stars. 84 reviews
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API Tap Water Conditioner, Aquarium Water Conditioner, 4 oz $8.09
$809
current price $8.09API Tap Water Conditioner, Aquarium Water Conditioner, 4 oz
914.8 out of 5 Stars. 91 reviews
API Aqua Essential All-in-One Concentrated Water Conditioner
3 options
Available in additional 3 optionsAPI Aqua Essential All-in-One Concentrated Water Conditioner
124.2 out of 5 Stars. 12 reviews
Best seller Tetra SafeStart, Cycles Water in Newly Set up Aquariums, 3.38 oz. From $8.42
4 options
Available in additional 4 optionsFrom$842
Tetra SafeStart, Cycles Water in Newly Set up Aquariums, 3.38 oz.
1314.5 out of 5 Stars. 131 reviews
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Acurel F Aquarium Clarifier [Aquarium, Water Conditioners] 50 mL $26.99
![Acurel F Aquarium Clarifier [Aquarium, Water Conditioners] 50 mL](https://i5.walmartimages.com/seo/Acurel-F-Aquarium-Clarifier-Aquarium-Water-Conditioners-50-mL_f97ee451-a076-498a-86be-f3f9c2426e4f.3ad79396c049b998c743618d003c89ba.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$2699
current price $26.99Acurel F Aquarium Clarifier [Aquarium, Water Conditioners] 50 mL
23 out of 5 Stars. 2 reviews
Blue Vet Red Cyano Slime Control Rx [Aquarium, Water Conditioners] Red Slime Control $30.98
![Blue Vet Red Cyano Slime Control Rx [Aquarium, Water Conditioners] Red Slime Control](https://i5.walmartimages.com/seo/Blue-Vet-Red-Cyano-Slime-Control-Rx-Aquarium-Water-Conditioners-Red-Slime-Control_214c1f40-713c-4b1e-aff0-7f24da8334fd.e54b9542fa75689c276aca550188de28.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$3098
current price $30.98Blue Vet Red Cyano Slime Control Rx [Aquarium, Water Conditioners] Red Slime Control
Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 250 ml (8.5 oz) $29.98
![Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 250 ml (8.5 oz)](https://i5.walmartimages.com/seo/Seachem-Prime-Water-Conditioner-F-W-S-W-Aquarium-Ammonia-Removers-250-ml-8-5-oz_09c2d820-4dcb-4688-9cce-9ee2907557b6.d0fea3b7bc15916665d4584a207079ba.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$2998
current price $29.98Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 250 ml (8.5 oz)
Aqueon Betta Bowl Plus Water Conditioner 4 Ounces
Aqueon Betta Bowl Plus Water Conditioner 4 Ounces
384.7 out of 5 Stars. 38 reviews
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API Stress Coat + Fish and Tap Water Conditioner - Aquarium Water Enhancer Fish Health Booster
API Stress Coat + Fish and Tap Water Conditioner - Aquarium Water Enhancer Fish Health Booster
1054.7 out of 5 Stars. 105 reviews
Aqueon AquaPacs Water Conditioner 4-Pack From $7.95
3 options
Available in additional 3 optionsFrom$795
Aqueon AquaPacs Water Conditioner 4-Pack
554.5 out of 5 Stars. 55 reviews
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Tap Water Conditioner for Houseplants, Hydroponics, & Aquariums | 16oz | Detoxifies Heavy Metals, Remove Chlorine & Chloramines, Balance pH, Support Plant Growth - Cute Farms $15.99
$1599
current price $15.99Tap Water Conditioner for Houseplants, Hydroponics, & Aquariums | 16oz | Detoxifies Heavy Metals, Remove Chlorine & Chloramines, Balance pH, Support Plant Growth - Cute Farms
21 out of 5 Stars. 2 reviews
API Stress Coat Marine Fish & Tap Water Conditioner, 16 oz (Treats 948 Gallons)
2 options
Available in additional 2 optionsAPI Stress Coat Marine Fish & Tap Water Conditioner, 16 oz (Treats 948 Gallons)
74.9 out of 5 Stars. 7 reviews
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API Stress Coat, Aquarium Water Conditioner, 64 oz $26.93 Was $32.82
Now$2693
current price Now $26.93, Was $32.82$32.82
API Stress Coat, Aquarium Water Conditioner, 64 oz
1134.8 out of 5 Stars. 113 reviews
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Prime100 mL / 3.4 fl. oz. $8.33
$833
current price $8.33Prime100 mL / 3.4 fl. oz.
234.9 out of 5 Stars. 23 reviews
Zoo Med ReptiSafe Instant Terrarium Water Conditioner 64 oz $36.20
Sponsored
$3620
current price $36.20Zoo Med ReptiSafe Instant Terrarium Water Conditioner 64 oz
11 out of 5 Stars. 1 reviews
Tank Pals Clarence the Clarifier Fish Aquarium Water Treatment, Purple From $9.09
Sponsored
From$909
Tank Pals Clarence the Clarifier Fish Aquarium Water Treatment, Purple
714.3 out of 5 Stars. 71 reviews
Seachem Prime Fish & Aquatic Life Marine & Freshwater Treatment, 8.5 fl oz $12.13 Was $20.74
Now$1213
current price Now $12.13, Was $20.74$20.74
Seachem Prime Fish & Aquatic Life Marine & Freshwater Treatment, 8.5 fl oz
654.8 out of 5 Stars. 65 reviews
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Fish Pond Water Conditioner - Convert tap water to fish-friendly pond water - AquaDoc Pond Supplies $33.99
$3399
current price $33.99Fish Pond Water Conditioner - Convert tap water to fish-friendly pond water - AquaDoc Pond Supplies
44.8 out of 5 Stars. 4 reviews
API Stress Coat Water Conditioner & Dechlorinator, 4 fl oz - Makes Tap Water Safe for Freshwater & Saltwater Aquariums
API Stress Coat Water Conditioner & Dechlorinator, 4 fl oz - Makes Tap Water Safe for Freshwater & Saltwater Aquariums
1274.8 out of 5 Stars. 127 reviews
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Aqueon Water Conditioner Makes Tap Water Safe for Fish [Aquarium Water Clarifiers, Aquarium Supplies] 96 oz (12 x 8 oz) $152.50
![Aqueon Water Conditioner Makes Tap Water Safe for Fish [Aquarium Water Clarifiers, Aquarium Supplies] 96 oz (12 x 8 oz)](https://i5.walmartimages.com/seo/Aqueon-Water-Conditioner-Makes-Tap-Water-Safe-for-Fish-Aquarium-Water-Clarifiers-Aquarium-Supplies-96-oz-12-x-8-oz_bb081be3-2814-4e8e-b159-0ac308c23444.b53fd27f4ab88679943e31dd0bdd2bb1.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$15250
current price $152.50Aqueon Water Conditioner Makes Tap Water Safe for Fish [Aquarium Water Clarifiers, Aquarium Supplies] 96 oz (12 x 8 oz)
Tetra Pond Start Water Conditioner Safe for Ornamental Pond Fish and Plants, 8 oz From $8.52
4 options
Available in additional 4 optionsFrom$852
Tetra Pond Start Water Conditioner Safe for Ornamental Pond Fish and Plants, 8 oz
144.6 out of 5 Stars. 14 reviews
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Tetra Aquasafe Plus Water Conditioner 16.9oz $17.27 $1.24/ea
$1727
current price $17.27$1.24/ea
Tetra Aquasafe Plus Water Conditioner 16.9oz
1834.7 out of 5 Stars. 183 reviews
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API Goldfish Care Pack, Aquarium Water Conditioner, 1.25 oz $11.18
$1118
current price $11.18API Goldfish Care Pack, Aquarium Water Conditioner, 1.25 oz
123.6 out of 5 Stars. 12 reviews
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API Goldfish Protect, Aquarium Water Conditioner, 4 oz $10.00
$1000
current price $10.00API Goldfish Protect, Aquarium Water Conditioner, 4 oz
35 out of 5 Stars. 3 reviews
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API Betta Water Conditioner, Betta Fish Freshwater Aquarium Water Conditioner, 1.7 oz $7.26 Was $9.20
Now$726
current price Now $7.26, Was $9.20$9.20
API Betta Water Conditioner, Betta Fish Freshwater Aquarium Water Conditioner, 1.7 oz
124.8 out of 5 Stars. 12 reviews
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Seachem Axolotl Conditioner 250mL $11.96 Was $13.29
Now$1196
current price Now $11.96, Was $13.29$13.29
Seachem Axolotl Conditioner 250mL
45 out of 5 Stars. 4 reviews
API Tap Water Conditioner, Aquarium Water Conditioner, 32 oz $19.99
$1999
current price $19.99API Tap Water Conditioner, Aquarium Water Conditioner, 32 oz
1154.7 out of 5 Stars. 115 reviews
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API Pond Stress Coat Water Conditioner [Pond Water Conditioners, Pond Supplies] 48 oz (3 x 16 oz) $87.50
![API Pond Stress Coat Water Conditioner [Pond Water Conditioners, Pond Supplies] 48 oz (3 x 16 oz)](https://i5.walmartimages.com/seo/API-Pond-Stress-Coat-Water-Conditioner-Pond-Water-Conditioners-Pond-Supplies-48-oz-3-x-16-oz_d9b3f7b6-e3c0-4d4a-a395-a21c2acfed9e.4b5a85f34b68095df21025dcaa9b0911.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$8750
current price $87.50API Pond Stress Coat Water Conditioner [Pond Water Conditioners, Pond Supplies] 48 oz (3 x 16 oz)
Tetra EasyBalance pH and Alkalinity Regulator Aquarium Water Conditioner, 8.45 oz From $9.17
4 options
Available in additional 4 optionsFrom$917
Tetra EasyBalance pH and Alkalinity Regulator Aquarium Water Conditioner, 8.45 oz
1494.5 out of 5 Stars. 149 reviews
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Tetra 19514 ReptoGuard Water Conditioner Block $5.99 $54.46/lb
$599
current price $5.99$54.46/lb
Tetra 19514 ReptoGuard Water Conditioner Block
604.5 out of 5 Stars. 60 reviews
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API Tap Water Conditioner, Aquarium Water Conditioner, 1-Gallon $55.48
$5548
current price $55.48API Tap Water Conditioner, Aquarium Water Conditioner, 1-Gallon
854.8 out of 5 Stars. 85 reviews
(3 pack) Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, 3.3 oz.
(3 pack) Tetra AquaSafe Aquarium Water Conditioner, Makes Tap Water Safe, 3.3 oz.
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Fast-Acting Aquarium Water Clarifier, 2026 Aquarium Water Conditioner Clarifier, Liquid State Clarifying Agent,Clears Cloudy Fish Tank, Liquid State Clarifying Agent, Safe & Gentle Formula $4.99 Was $10.13
Now$499
current price Now $4.99, Was $10.13$10.13
Fast-Acting Aquarium Water Clarifier, 2026 Aquarium Water Conditioner Clarifier, Liquid State Clarifying Agent,Clears Cloudy Fish Tank, Liquid State Clarifying Agent, Safe & Gentle Formula
Stability $7.99
$799
current price $7.99Stability
124.5 out of 5 Stars. 12 reviews
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Seachem Laboratories Clarity Ultimate Water Clarifier 325ML/11 oz Bonus Size$15.96current price $15.96API Proper pH Sets and Stabilizes Freshwater Aquariums [Aquarium pH Treatments, Aquarium Supplies] pH 7.5 - 5 count
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![Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 500 ml (16.9 oz)](https://i5.walmartimages.com/seo/Seachem-Prime-Water-Conditioner-F-W-S-W-Aquarium-Ammonia-Removers-500-ml-16-9-oz_6ea567fb-c9c7-4ad2-9f5c-03e1832d2daa.93a54edaa3849744e821151732d9e432.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 500 ml (16.9 oz)$35.83current price $35.83Tank Pals: Clarence the Clarifier Fish - 2 pk, Purple-Orange - Aquarium Treatment, Clear Cloudy Fresh-Saltwater, Fish Safe, 10gal Tank Maintenance Ea
Tank Pals: Clarence the Clarifier Fish - 2 pk, Purple-Orange - Aquarium Treatment, Clear Cloudy Fresh-Saltwater, Fish Safe, 10gal Tank Maintenance Ea$13.29current price $13.29Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 250 ml (8.5 oz)
Seachem Prime Water Conditioner F/W &S/W [Aquarium, Ammonia Removers] 250 ml (8.5 oz)$29.98current price $29.98For API Stress Coat + Fish and Tap Water Conditioner Cover ,Xpm Phone Case [ ]
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For API Stress Coat + Fish and Tap Water Conditioner Cover ,Xpm Phone Case [ ]$97.10current price $97.10Aqueon Ammonia Neutralizer for Freshwater and Saltwater Aquariums [Aquarium Bio Additives, Aquarium Water Conditioners, Aquarium Supplies] 24 oz (6 x 4 oz)
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Aqueon Ammonia Neutralizer for Freshwater and Saltwater Aquariums [Aquarium Bio Additives, Aquarium Water Conditioners, Aquarium Supplies] 24 oz (6 x 4 oz)$79.99current price $79.99API Algaefix Algae Control Solution, 8 fl oz - For Freshwater & Planted Aquariums
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