What are aquarium water conditioners?

Aquarium water conditioners are treatments that remove harmful substances like chlorine, chloramine, and heavy metals from tap water, making it safe for fish and other aquatic life.

Is a water conditioner necessary for an aquarium?

Yes. Unless you are using pre-conditioned water, aquarium water conditioners are essential for neutralizing harmful chemicals in tap water. Without them, fish can be exposed to toxins that may cause stress or illness.

What happens if you forget to put a water conditioner in your fish tank?

Without water conditioner, chlorine and chloramine in tap water can irritate fish gills, damage their protective slime coat, and even be fatal in high concentrations. It's important to treat water before adding it to the tank.

How long can you let the aquarium water conditioner sit before adding fish?

Most water conditioners work instantly, allowing fish to be added right away. However, some formulas may require a few minutes to fully neutralize harmful chemicals. Always follow the product's instructions for best results.

Aquarium & Fish Tank Water Conditioner & Dechlorinator - Page 3 (Free Shipping)

Slide 1 of 2

API Aquarium Start-Up Pack

Rated 4.7 out of 5 stars

19

$6.99 Chewy Price

$8.28 List Price

16% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 2 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 3 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 4 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 5 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 6 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 7 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 8 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count slide 9 of 9

HydrOasis Catappa Leaves Fish Plant, 3 count

Rated 5 out of 5 stars

1

$7.50 Chewy Price

Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jun 1 and Jun 4

Slide 1 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle slide 2 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle slide 3 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle slide 4 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle slide 5 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle slide 6 of 6

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle

Rated 5 out of 5 stars

5

$7.19 Chewy Price

($1.80/oz) Price per Unit

$8.99 List Price

20% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 5

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle slide 2 of 5

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle slide 3 of 5

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle slide 4 of 5

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle slide 5 of 5

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle

Rated 5 out of 5 stars

3

$8.99 Chewy Price

($1.13/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Tetra AquaSafe Aquarium Water Conditioner, 8.45-fl oz bottle

Rated 4.9 out of 5 stars

89

$9.32 Chewy Price

($1.11/fl oz) Price per Unit

$10.89 List Price

14% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

API Stress Zyme Freshwater & Saltwater Aquarium Cleaning Solution, 32-fl oz bottle

Rated 4.9 out of 5 stars

14

$41.98 Chewy Price

($1.32/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

ASF Reef Shots Reef Elements Aquarium Treatment, 16-oz bag

$19.99 Chewy Price

($1.25/oz) Price per Unit

$23.99 List Price

17% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Microbe-Lift Special Blend Salt & Fresh Water Eco System in a Bottle, 8.5-oz bottle

Rated 4.6 out of 5 stars

16

$12.99 Chewy Price

($1.53/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Lifegard Live Nitrifying Fish Pond Bacteria, 32-fl oz bottle

Rated 4.8 out of 5 stars

4

$25.70 Chewy Price

($0.81/fl oz) Price per Unit

$28.12 List Price

Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jun 3 and Jun 7

Dr. Tim's Aquatics Eco-Balance Freshwater Aquarium Cleaner, 4-fl oz bottle

$10.89 Chewy Price

($2.73/oz) Price per Unit

$13.99 List Price

22% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

API Marine Quick Start Aquarium Water Conditioner, 16-fl oz bottle

Rated 4.6 out of 5 stars

17

$19.99 Chewy Price

($1.25/fl oz) Price per Unit

$27.98 List Price

29% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Python Multi Purpose Bio-Clean Aquarium Water Care, 1-fl oz bottle

Rated 4.7 out of 5 stars

10

$3.49 Chewy Price

($3.49/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Dr. Tim's Aquatics Reef Eco-Balance Marine Aquarium Cleaner, 8-fl oz bottle

Rated 5 out of 5 stars

2

$20.89 Chewy Price

($2.62/oz) Price per Unit

$23.99 List Price

13% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

SunGrow Water Conditioner Balls for Betta, Tropical Fish Tank Decorations & Aquarium Water Enha...

Rated 4.1 out of 5 stars

35

$3.99 Chewy Price

($0.40/ea) Price per Unit

$5.99 List Price

33% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aqueon AquaPacs Aquarium Ammonia Reducer, 12 pack, 10-gal

Rated 4.6 out of 5 stars

18

$15.00 Chewy Price

($1.25/ea) Price per Unit

$16.99 List Price

12% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Tetra SafeStart Plus for Freshwater Aquariums, 8.45-fl oz bottle

Rated 4.9 out of 5 stars

10

$18.07 Chewy Price

($2.14/fl oz) Price per Unit

$22.89 List Price

21% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

GloFish Betta Aquarium Water Conditioner, 2-fl oz bottle

$4.10 Chewy Price

($2.05/fl oz) Price per Unit

$6.19 List Price

34% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Dr. Tim's Aquatics Marine Waste-Away Gel Water Conditioner, Medium: 50-gal, 2 count

$33.97 Chewy Price

($16.99/ea) Price per Unit

$38.99 List Price

13% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Microbe-Lift Aquatic Stress Relief Aquarium Treatment, 16-oz bottle

Rated 4.5 out of 5 stars

2

$14.49 Chewy Price

($0.91/oz) Price per Unit

$17.99 List Price

19% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

HydrOasis Catappa Leaves Large Fish Plant, 10 count

Rated 5 out of 5 stars

2

$14.75 Chewy Price

Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jun 1 and Jun 4

Dr. Tim's Aquatics Clear-Up Freshwater Aquarium Cleaner, 4-fl oz bottle

Rated 4.7 out of 5 stars

3

$12.99 Chewy Price

($3.25/oz) Price per Unit

$15.99 List Price

19% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fritz Casuarina Cones, 20 count

Rated 3 out of 5 stars

3

$12.99 Chewy Price

($0.65/ea) Price per Unit

$14.99 List Price

13% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aqueon Betta Water Renewal Conditioner, 4-oz bottle

Rated 3 out of 5 stars

2

$5.99 Chewy Price

($1.50/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

biOrb Aquarium Service Kit 3 Plus Water Optimizer

Rated 4.7 out of 5 stars

41

$31.00 Chewy Price

$36.99 List Price

16% Off

Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 5

ASF Reef Shots Strontium Aquarium Treatment, 16-oz bag

$17.43 Chewy Price

($1.09/oz) Price per Unit

$23.99 List Price

27% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

AquaForest Component 1+2+3+ Aquarium Solution, 3.96-gal

Rated 5 out of 5 stars

1

$62.69 Chewy Price

($15.84/gl) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Dr. Tim's Aquatics First Defense Freshwater Aquarium Cleaner, 8-fl oz bottle

Rated 5 out of 5 stars

4

$15.89 Chewy Price

($1.99/fl oz) Price per Unit

$23.99 List Price

34% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Dr. Tim's Aquatics Axolotl First Defense Water Conditioner, 4-fl oz bottle

Rated 3 out of 5 stars

2

$13.99 Chewy Price

($3.50/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Dr. Tim's Aquatics Shrimp First Defense Water Conditioner, 4-fl oz bottle

$11.73 Chewy Price

($2.94/fl oz) Price per Unit

$13.99 List Price

16% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

API Splendid Betta Complete Aquarium Water Conditioner, 1.25-fl oz bottle

Rated 5 out of 5 stars

10

$5.78 Chewy Price

($4.63/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

AquaZen Aquarium Water Conditioner - Clarifier, 8.45-fl oz bottle

$12.99 Chewy Price

($1.54/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aqueon Betta Bowl Plus Water Conditioner, 4-fl oz bottle

Rated 4.8 out of 5 stars

69

$5.38 Chewy Price

($1.35/fl oz) Price per Unit

$6.49 List Price

17% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Dr. Tim's Aquatics Re-Fresh Freshwater Aquarium Cleaner, 8-fl oz bottle

Rated 4.8 out of 5 stars

8

$26.99 Chewy Price

($3.38/fl oz) Price per Unit

$39.99 List Price

33% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydrospace PNS DeepCycle Fish Aquarium Substrate, Purple, 16-oz

$37.99 Chewy Price

($2.38/oz) Price per Unit

Autoship Price

Contains Live Feed

Free 1-3 day delivery on first-time orders
Free 365-day returns

Zoo Med Betta H2O Conditioner, 0.5-fl oz

Rated 4.1 out of 5 stars

19

$4.99 Chewy Price

($9.98/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Loading options...

Dr. Tim's Aquatics Betta One & Only Water Conditioner, 2-fl oz bottle

Rated 5 out of 5 stars

1

$13.41 Chewy Price

($6.71/fl oz) Price per Unit

$16.99 List Price

21% Off

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aquarium & Fish Tank Water Conditioner & Dechlorinator

API Aquarium Start-Up Pack

HydrOasis Catappa Leaves Fish Plant, 3 count

Dr. Tim's Aquatics Ammonium Chloride Solution Aquarium Cleaner, 4-fl oz bottle

Fluval Sea Iodine Aquarium Water Conditioner, 8-oz bottle

Tetra AquaSafe Aquarium Water Conditioner, 8.45-fl oz bottle

API Stress Zyme Freshwater & Saltwater Aquarium Cleaning Solution, 32-fl oz bottle

ASF Reef Shots Reef Elements Aquarium Treatment, 16-oz bag

Microbe-Lift Special Blend Salt & Fresh Water Eco System in a Bottle, 8.5-oz bottle

Lifegard Live Nitrifying Fish Pond Bacteria, 32-fl oz bottle

Dr. Tim's Aquatics Eco-Balance Freshwater Aquarium Cleaner, 4-fl oz bottle

API Marine Quick Start Aquarium Water Conditioner, 16-fl oz bottle

Python Multi Purpose Bio-Clean Aquarium Water Care, 1-fl oz bottle

Dr. Tim's Aquatics Reef Eco-Balance Marine Aquarium Cleaner, 8-fl oz bottle

SunGrow Water Conditioner Balls for Betta, Tropical Fish Tank Decorations & Aquarium Water Enha...

Aqueon AquaPacs Aquarium Ammonia Reducer, 12 pack, 10-gal

Tetra SafeStart Plus for Freshwater Aquariums, 8.45-fl oz bottle

GloFish Betta Aquarium Water Conditioner, 2-fl oz bottle

Dr. Tim's Aquatics Marine Waste-Away Gel Water Conditioner, Medium: 50-gal, 2 count

Microbe-Lift Aquatic Stress Relief Aquarium Treatment, 16-oz bottle

HydrOasis Catappa Leaves Large Fish Plant, 10 count

Dr. Tim's Aquatics Clear-Up Freshwater Aquarium Cleaner, 4-fl oz bottle

Fritz Casuarina Cones, 20 count

Aqueon Betta Water Renewal Conditioner, 4-oz bottle

biOrb Aquarium Service Kit 3 Plus Water Optimizer

ASF Reef Shots Strontium Aquarium Treatment, 16-oz bag

AquaForest Component 1+2+3+ Aquarium Solution, 3.96-gal

Dr. Tim's Aquatics First Defense Freshwater Aquarium Cleaner, 8-fl oz bottle

Dr. Tim's Aquatics Axolotl First Defense Water Conditioner, 4-fl oz bottle

Dr. Tim's Aquatics Shrimp First Defense Water Conditioner, 4-fl oz bottle

API Splendid Betta Complete Aquarium Water Conditioner, 1.25-fl oz bottle

AquaZen Aquarium Water Conditioner - Clarifier, 8.45-fl oz bottle

Aqueon Betta Bowl Plus Water Conditioner, 4-fl oz bottle

Dr. Tim's Aquatics Re-Fresh Freshwater Aquarium Cleaner, 8-fl oz bottle

Hydrospace PNS DeepCycle Fish Aquarium Substrate, Purple, 16-oz

Zoo Med Betta H2O Conditioner, 0.5-fl oz

Dr. Tim's Aquatics Betta One & Only Water Conditioner, 2-fl oz bottle

Aquarium Concern

Brand

Fish Type

Aquarium Type

Deals & Savings

Price

Customer Rating