What water treatment do I need for a freshwater aquarium?

Most freshwater aquariums need a water conditioner to remove chlorine and chloramines from tap water. Depending on your tank's needs, you may also require pH balancers, ammonia removers, and bacteria supplements to keep water parameters stable and fish healthy.

Do I need a special water conditioner for freshwater tanks?

Yes, freshwater aquariums need water conditioners formulated specifically for their environment. These treatments neutralize harmful chemicals in tap water and support a safe, stress-free habitat for your fish.

Tropical Fish Tank Health & Water Care - Page 7 (Free Shipping)

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Dr. Tim's Aquatics Waste-Away Gel Turtle Water Conditioner, Medium, 2 count slide 2 of 2

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New

Dr. Tim's Aquatics Waste-Away Gel Turtle Water Conditioner, Medium, 2 count

$29.19 Chewy Price

($14.60/ea) Price per Unit

$35.99 List Price

$27.73 Autoship Price

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

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Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 2 of 8

Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 3 of 8

Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 4 of 8

Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 5 of 8

Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 6 of 8

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Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle slide 8 of 8

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Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle

$16.46 Chewy Price

($0.97/fl oz) Price per Unit

$15.64 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

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OASE Indoor Aquatics Aqua In-Out Set Fish Water-Conditioner slide 2 of 3

OASE Indoor Aquatics Aqua In-Out Set Fish Water-Conditioner slide 3 of 3

OASE Indoor Aquatics Aqua In-Out Set Fish Water-Conditioner

Rated 3 out of 5 stars

3

$75.99 Chewy Price

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

Fritz Aquarium Water Master Test Kit

Rated 3.7 out of 5 stars

6

$36.74 Chewy Price

$48.99 List Price

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

ASF SeaTest pH Fish Aquarium Water Test Kit, 100 count

Rated 5 out of 5 stars

1

$12.39 Chewy Price

($0.13/ea) Price per Unit

$20.99 List Price

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

Reeflowers Aqua Plants Phosphate Balling Set II Fish Aquarium Water Conditioner, 17-fl oz bottl...

$16.46 Chewy Price

($0.97/fl oz) Price per Unit

$15.64 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

Dr. Tim's Aquatics Clear-Up Freshwater Aquarium Cleaner, 16-fl oz bottle

Rated 4.7 out of 5 stars

3

$34.89 Chewy Price

($2.19/fl oz) Price per Unit

$33.15 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 5 and Feb 11

Dr. Tim's Aquatics Eco-Balance Freshwater Aquarium Cleaner, 64-fl oz bottle

$48.19 Chewy Price

($0.76/fl oz) Price per Unit

$45.78 Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Feb 5 and Feb 11

Reeflowers Aqua Plants Potash Balling Set IV Fish Aquarium Water Conditioner, 8.5-fl oz bottle

$10.36 Chewy Price

($1.22/fl oz) Price per Unit

$9.84 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

Reeflowers Aqua Plants Nitrate Balling Set I Fish Aquarium Water Conditioner, 2.9-fl oz bottle

$6.28 Chewy Price

($2.17/fl oz) Price per Unit

$5.97 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

Reeflowers pH Minus Aquarium Water Treatment, 34-oz bottle

$19.95 Chewy Price

($0.59/oz) Price per Unit

$23.60 List Price

$18.95 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

ASF SEATEST GH Total Hardness Fish Aquarium Water Test Kit, 40 count

$18.99 Chewy Price

($0.48/ea) Price per Unit

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

Dr. Tim's Aquatics Shrimp Waste-Away Water Conditioner, 4-fl oz bottle

Rated 5 out of 5 stars

1

$11.79 Chewy Price

($2.95/fl oz) Price per Unit

$14.99 List Price

$11.20 Autoship Price

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

Reeflowers Aqua Plants Trace Balling Set VI Fish Aquarium Water Conditioner, 2.9-fl oz bottle

$6.28 Chewy Price

($2.17/fl oz) Price per Unit

$5.97 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

Reeflowers AquaPlants Potash Solution IV Aquarium Plant Treatment, 34-oz bottle

$20.70 Chewy Price

($0.61/oz) Price per Unit

$23.94 List Price

$19.66 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

Reeflowers pH Buffer 9.4 Fish Aquarium Water Conditioner, 17-fl oz bottle

Rated 5 out of 5 stars

1

$15.83 Chewy Price

($0.94/fl oz) Price per Unit

$17.35 List Price

$15.04 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

Coralife Filter Bio Balls Fish Salt Minerals, 5 gallons

$86.34 Chewy Price

($17.27/gl) Price per Unit

$119.99 List Price

$82.02 Autoship Price

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

New

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

$145.99 Chewy Price

($58.40/gl) Price per Unit

$150.99 List Price

Contains Live Feed

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

Reeflowers Effective Dechlorinator Fish Aquarium Water Conditioner, 8.5-fl oz bottle

Rated 4.7 out of 5 stars

6

$13.41 Chewy Price

($1.58/fl oz) Price per Unit

$12.74 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

Reeflowers American Trace Fish Aquarium Water Conditioner, 17-fl oz bottle

Rated 5 out of 5 stars

1

$16.34 Chewy Price

($0.97/fl oz) Price per Unit

$18.36 List Price

$15.52 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

Reeflowers pH Minus Fish Aquarium Water Conditioner, 17-fl oz bottle

$16.05 Chewy Price

($0.95/fl oz) Price per Unit

$17.06 List Price

$15.25 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

Ruby Reef Kick-Ich NANO Formula Aquarium Water Treatment, 8-fl oz bottle

Rated 4 out of 5 stars

4

$8.99 Chewy Price

($1.13/fl oz) Price per Unit

$9.59 List Price

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

ASF SeaTest NH3 Ammonia-Ammonium Fish Aquarium Water Test Kit, 40 count

Rated 1 out of 5 stars

1

$19.99 Chewy Price

($0.50/ea) Price per Unit

$23.99 List Price

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

Dr. Tim's Aquatics First Defense Freshwater Aquariums Stress Relief & Immune Support, 8-fl oz b...

Rated 5 out of 5 stars

1

$15.99 Chewy Price

($2.00/fl oz) Price per Unit

$23.99 List Price

$15.19 Autoship Price

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

Reeflowers AquaPlants Phosphate Solution II Aquarium Plant Treatment, 34-oz bottle

$21.72 Chewy Price

($0.64/oz) Price per Unit

$23.94 List Price

$20.63 Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 11

ASF SeaTest NO2- Nitrite Fish Aquarium Water Test Kit, 100 count

$14.09 Chewy Price

($0.15/ea) Price per Unit

$23.99 List Price

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

Ruby Reef Kick-Ich PRO Aquarium Water Treatment, 64-fl oz bottle

Rated 3.5 out of 5 stars

13

$34.57 Chewy Price

($0.55/fl oz) Price per Unit

$36.99 List Price

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

Out of Stock

API Stress Coat with Pump Aquarium Water Conditioner, 16-fl oz bottle

Rated 4.6 out of 5 stars

41

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

Out of Stock

Reeflowers Effective Conditioner Stress Guard Aquarium Conditioner, 101-fl oz bottle

Free delivery on first-time orders
Free 365-day returns
Arrives between Feb 4 and Feb 10

Out of Stock

Cobalt Aquatics Freshwater Aquarium Salt, 16-oz bag

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 6 and Feb 11

Out of Stock

Reeflowers Aqua Clarify Aquarium Water Clarifier & Purifier, 3000-mL bottle

Rated 5 out of 5 stars

1

Free delivery on first-time orders
Free 365-day returns
Arrives between Feb 4 and Feb 10

Out of Stock

CaribSea Eco-Complete Cichlid Zack Aquarium Substrate, 20-lb bag

Rated 4.7 out of 5 stars

30

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

Out of Stock

API Quick Start Freshwater & Saltwater Aquarium Nitrifying Bacteria, 32-fl oz bottle

Rated 4.4 out of 5 stars

28

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

Out of Stock

Kordon Methylene Blue General Disease Prevention Aquarium Treatment, 4-oz bottle

Rated 4.7 out of 5 stars

34

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

Out of Stock

Salifert Aquarium Magnesium Test Kit

Rated 4.8 out of 5 stars

4

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

Out of Stock

Reeflowers pH Buffer 9.4 pH+ Aquarium Water Treatment, 101-oz bottle

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Feb 4 and Feb 10

Tropical Fish Tank Health & Water Care

Dr. Tim's Aquatics Waste-Away Gel Turtle Water Conditioner, Medium, 2 count

Reeflowers Aqua Plants Ferrous Balling Set V Fish Aquarium Water Conditioner, 17-fl oz bottle

OASE Indoor Aquatics Aqua In-Out Set Fish Water-Conditioner

Fritz Aquarium Water Master Test Kit

ASF SeaTest pH Fish Aquarium Water Test Kit, 100 count

Reeflowers Aqua Plants Phosphate Balling Set II Fish Aquarium Water Conditioner, 17-fl oz bottl...

Dr. Tim's Aquatics Clear-Up Freshwater Aquarium Cleaner, 16-fl oz bottle

Dr. Tim's Aquatics Eco-Balance Freshwater Aquarium Cleaner, 64-fl oz bottle

Reeflowers Aqua Plants Potash Balling Set IV Fish Aquarium Water Conditioner, 8.5-fl oz bottle

Reeflowers Aqua Plants Nitrate Balling Set I Fish Aquarium Water Conditioner, 2.9-fl oz bottle

Reeflowers pH Minus Aquarium Water Treatment, 34-oz bottle

ASF SEATEST GH Total Hardness Fish Aquarium Water Test Kit, 40 count

Dr. Tim's Aquatics Shrimp Waste-Away Water Conditioner, 4-fl oz bottle

Reeflowers Aqua Plants Trace Balling Set VI Fish Aquarium Water Conditioner, 2.9-fl oz bottle

Reeflowers AquaPlants Potash Solution IV Aquarium Plant Treatment, 34-oz bottle

Reeflowers pH Buffer 9.4 Fish Aquarium Water Conditioner, 17-fl oz bottle

Coralife Filter Bio Balls Fish Salt Minerals, 5 gallons

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

Reeflowers Effective Dechlorinator Fish Aquarium Water Conditioner, 8.5-fl oz bottle

Reeflowers American Trace Fish Aquarium Water Conditioner, 17-fl oz bottle

Reeflowers pH Minus Fish Aquarium Water Conditioner, 17-fl oz bottle

Ruby Reef Kick-Ich NANO Formula Aquarium Water Treatment, 8-fl oz bottle

ASF SeaTest NH3 Ammonia-Ammonium Fish Aquarium Water Test Kit, 40 count

Dr. Tim's Aquatics First Defense Freshwater Aquariums Stress Relief & Immune Support, 8-fl oz b...

Reeflowers AquaPlants Phosphate Solution II Aquarium Plant Treatment, 34-oz bottle

ASF SeaTest NO2- Nitrite Fish Aquarium Water Test Kit, 100 count

Ruby Reef Kick-Ich PRO Aquarium Water Treatment, 64-fl oz bottle

API Stress Coat with Pump Aquarium Water Conditioner, 16-fl oz bottle

Reeflowers Effective Conditioner Stress Guard Aquarium Conditioner, 101-fl oz bottle

Cobalt Aquatics Freshwater Aquarium Salt, 16-oz bag

Reeflowers Aqua Clarify Aquarium Water Clarifier & Purifier, 3000-mL bottle

CaribSea Eco-Complete Cichlid Zack Aquarium Substrate, 20-lb bag

API Quick Start Freshwater & Saltwater Aquarium Nitrifying Bacteria, 32-fl oz bottle

Kordon Methylene Blue General Disease Prevention Aquarium Treatment, 4-oz bottle

Salifert Aquarium Magnesium Test Kit

Reeflowers pH Buffer 9.4 pH+ Aquarium Water Treatment, 101-oz bottle

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