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 5 (Free Shipping)

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Zoo Med Betta H2O Conditioner, 0.5-fl oz

Rated 4.2 out of 5 stars

21

$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

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Dr. Tim's Aquatics Shrimp One & Only Water Conditioner, 2-fl oz bottle slide 2 of 5

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

$13.41 Chewy Price

($6.71/fl oz) Price per Unit

$16.99 List Price

Autoship Price

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

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ASF Magnesium Booster Aquarium Treatment, 2.2-lb bottle slide 2 of 9

ASF Magnesium Booster Aquarium Treatment, 2.2-lb bottle slide 3 of 9

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ASF Magnesium Booster Aquarium Treatment, 2.2-lb bottle

$17.99 Chewy Price

($8.18/lb) Price per Unit

$21.99 List Price

Autoship Price

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

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Dr. Tim's Aquatics Waste-Away Gel Betta Water Conditioner, Small, 1 count slide 2 of 7

Dr. Tim's Aquatics Waste-Away Gel Betta Water Conditioner, Small, 1 count slide 3 of 7

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Dr. Tim's Aquatics Waste-Away Gel Betta Water Conditioner, Small, 1 count

Rated 5 out of 5 stars

1

$14.99 Chewy Price

($14.99/ea) Price per Unit

Autoship Price

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

API Reef Magnesium Marine Aquarium Solution, 16-oz bottle

$13.36 Chewy Price

($0.84/oz) Price per Unit

$18.28 List Price

Autoship Price

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

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

Rated 5 out of 5 stars

2

$17.99 Chewy Price

($4.50/oz) Price per Unit

Autoship Price

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

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

$21.47 Chewy Price

($1.35/oz) Price per Unit

$23.99 List Price

Autoship Price

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

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Dr. Tim's Aquatics Eco-Balance Saltwater Aquarium Cleaner, 128-fl oz bottle

$83.99 Chewy Price

($0.66/fl oz) Price per Unit

Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Jul 21 and Jul 26

Hydrospace PNS ProBio Fish Aquarium Additive, Maroon, 1-gal

$185.99 Chewy Price

($185.99/gl) Price per Unit

Autoship Price

Contains Live Feed

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

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

$11.29 Chewy Price

($2.83/fl oz) Price per Unit

$13.99 List Price

Autoship Price

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

ASF Reef Shots Coraline Booster Aquarium Treatment, 16-oz bag

$19.99 Chewy Price

($1.25/oz) Price per Unit

$23.99 List Price

Autoship Price

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

ASF Alkalinity & pH Booster Aquarium Treatment, 2.2-lb bottle

$17.99 Chewy Price

($8.18/lb) Price per Unit

$21.99 List Price

Autoship Price

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

ASF Calcium Booster Aquarium Treatment, 2.2-lb bottle

$17.99 Chewy Price

($8.18/lb) Price per Unit

$21.99 List Price

Autoship Price

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

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Dr. Tim's Aquatics First Defense Saltwater Aquarium Cleaner, 4-fl oz bottle

$12.79 Chewy Price

($3.20/oz) Price per Unit

$15.99 List Price

Autoship Price

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

ASF Reef Shots Magnesium Aquarium Treatment, 16-oz bag

$23.50 Chewy Price

($1.47/oz) Price per Unit

$23.99 List Price

Autoship Price

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

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Dr. Tim's Aquatics Re-Fresh Saltwater Aquarium Cleaner, 4-fl oz bottle

$20.59 Chewy Price

($5.15/oz) Price per Unit

$25.99 List Price

Autoship Price

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

Hydrospace PNS DeepCycle Fish Supplement, 1-gal

$219.99 Chewy Price

($219.99/gl) Price per Unit

Autoship Price

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

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

Rated 1 out of 5 stars

1

$16.95 Chewy Price

($4.24/oz) Price per Unit

$17.99 List Price

Autoship Price

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

ASF Reef Shots Reef Bacteria Food Aquarium Treatment, 16-oz bag

$18.50 Chewy Price

($1.16/oz) Price per Unit

$23.99 List Price

Autoship Price

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

ASF Reef Shots Calcium Aquarium Treatment, 16-oz bag

$19.99 Chewy Price

($1.25/oz) Price per Unit

$23.99 List Price

Autoship Price

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

ASF Reef Shots Iodide Aquarium Treatment, 16-oz bag

$15.50 Chewy Price

($0.97/oz) Price per Unit

$23.99 List Price

Autoship Price

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

Hydrospace PNS HomeGro Fish Aquarium Bacteria, Blue, 2.5-gal

$145.99 Chewy Price

($58.40/gl) Price per Unit

$150.99 List Price

Autoship Price

Contains Live Feed

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

HydrOasis Betta Bundle Fish Plant

Rated 4 out of 5 stars

4

$24.99 Chewy Price

Autoship Price

Live Plant

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 21 and Jul 24

HydrOasis Jungle Water Bundle Fish Plant

Rated 5 out of 5 stars

1

$24.99 Chewy Price

Autoship Price

Live Plant

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 21 and Jul 24

HydrOasis Dwarf Shrimp Bundle Fish Plant

Rated 5 out of 5 stars

1

$29.99 Chewy Price

Autoship Price

Live Plant

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 21 and Jul 24

HydrOasis Discus Bundle Fish Plant

Rated 5 out of 5 stars

1

$22.99 Chewy Price

Autoship Price

Live Plant

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 21 and Jul 24

HydrOasis Starter Bundle Fish Plant

$48.44 Chewy Price

$49.99 List Price

Autoship Price

Live Plant

Free delivery on first-time orders
Free 365-day returns
Arrives between Jul 21 and Jul 24

Out of Stock

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

Rated 2.5 out of 5 stars

4

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

Out of Stock

Lifegard Pond Cleaner & Sludge Remover Pond Treatment, 32-fl oz bottle

Rated 5 out of 5 stars

5

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 22 and Jul 27

Out of Stock

Fritz FritzGuard Aquarium Water Conditioner, 16-fl oz bottle

Rated 4.7 out of 5 stars

7

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

Out of Stock

AquaForest Life Source Natural Mud for Aquariums, 33.84-fl oz

Rated 5 out of 5 stars

3

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

Out of Stock

HydrOasis Catappa Leaves Large Fish Plant, 10 count

Rated 5 out of 5 stars

2

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

Out of Stock

Fritz FritzZyme 9 Saltwater Aquarium Water Treatment, 1-gal bottle

Rated 3.8 out of 5 stars

5

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

Out of Stock

HydrOasis Wood Apple Pod Fish Plant, 3 count

Rated 5 out of 5 stars

2

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

Out of Stock

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Dr. Tim's Aquatics First Defense Koi Ponds & Water Gardens Cleaner, 16-fl oz bottle

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jul 21 and Jul 26

Out of Stock

Fritz RPM Elements Alkalinity Aquarium Water Treatment, 1-gal bottle

Rated 4.5 out of 5 stars

4

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

Aquarium & Fish Tank Water Conditioner & Dechlorinator

Zoo Med Betta H2O Conditioner, 0.5-fl oz

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

ASF Magnesium Booster Aquarium Treatment, 2.2-lb bottle

Dr. Tim's Aquatics Waste-Away Gel Betta Water Conditioner, Small, 1 count

API Reef Magnesium Marine Aquarium Solution, 16-oz bottle

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

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

Dr. Tim's Aquatics Eco-Balance Saltwater Aquarium Cleaner, 128-fl oz bottle

Hydrospace PNS ProBio Fish Aquarium Additive, Maroon, 1-gal

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

ASF Reef Shots Coraline Booster Aquarium Treatment, 16-oz bag

ASF Alkalinity & pH Booster Aquarium Treatment, 2.2-lb bottle

ASF Calcium Booster Aquarium Treatment, 2.2-lb bottle

Dr. Tim's Aquatics First Defense Saltwater Aquarium Cleaner, 4-fl oz bottle

ASF Reef Shots Magnesium Aquarium Treatment, 16-oz bag

Dr. Tim's Aquatics Re-Fresh Saltwater Aquarium Cleaner, 4-fl oz bottle

Hydrospace PNS DeepCycle Fish Supplement, 1-gal

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

ASF Reef Shots Reef Bacteria Food Aquarium Treatment, 16-oz bag

ASF Reef Shots Calcium Aquarium Treatment, 16-oz bag

ASF Reef Shots Iodide Aquarium Treatment, 16-oz bag

Hydrospace PNS HomeGro Fish Aquarium Bacteria, Blue, 2.5-gal

HydrOasis Betta Bundle Fish Plant

HydrOasis Jungle Water Bundle Fish Plant

HydrOasis Dwarf Shrimp Bundle Fish Plant

HydrOasis Discus Bundle Fish Plant

HydrOasis Starter Bundle Fish Plant

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

Lifegard Pond Cleaner & Sludge Remover Pond Treatment, 32-fl oz bottle

Fritz FritzGuard Aquarium Water Conditioner, 16-fl oz bottle

AquaForest Life Source Natural Mud for Aquariums, 33.84-fl oz

HydrOasis Catappa Leaves Large Fish Plant, 10 count

Fritz FritzZyme 9 Saltwater Aquarium Water Treatment, 1-gal bottle

HydrOasis Wood Apple Pod Fish Plant, 3 count

Dr. Tim's Aquatics First Defense Koi Ponds & Water Gardens Cleaner, 16-fl oz bottle

Fritz RPM Elements Alkalinity Aquarium Water Treatment, 1-gal bottle

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