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 3 (Free Shipping)

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Microbe-Lift Special Blend Salt & Fresh Water Eco System in a Bottle, 8.5-oz bottle slide 2 of 7

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

Rated 4.6 out of 5 stars

15

$12.99 Chewy Price

($1.53/oz) Price per Unit

$12.34 Autoship Price

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

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Activ-Flora Planted Aquarium Substrate, Lake Gems, 20-lb bag slide 2 of 3

Activ-Flora Planted Aquarium Substrate, Lake Gems, 20-lb bag slide 3 of 3

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Activ-Flora Planted Aquarium Substrate, Lake Gems, 20-lb bag

Rated 4.1 out of 5 stars

117

$24.99 Chewy Price

($1.25/lb) Price per Unit

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

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API Aquarium Start-Up Pack

Rated 4.7 out of 5 stars

17

$6.99 Chewy Price

$8.28 List Price

$6.64 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Reeflowers AquaClarify Fish Aquarium Water Conditioner, 2.9-fl oz bottle slide 2 of 7

Reeflowers AquaClarify Fish Aquarium Water Conditioner, 2.9-fl oz bottle slide 3 of 7

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Reeflowers AquaClarify Fish Aquarium Water Conditioner, 2.9-fl oz bottle

Rated 5 out of 5 stars

1

$4.75 Chewy Price

($1.64/fl oz) Price per Unit

$4.51 Autoship Price

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

Tetra WaterClarifier Freshwater Aquarium Water Conditioner, 8.45-fl oz bottle

Rated 4.1 out of 5 stars

53

$8.99 Chewy Price

($1.07/fl oz) Price per Unit

$10.39 List Price

$8.54 Autoship Price

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

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Black

$69.41 Chewy Price

($69.41/ea) Price per Unit

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

Aqueon AquaPacs Aquarium Water Clarifier, 12 pack, 10-gal

Rated 3.8 out of 5 stars

18

$13.72 Chewy Price

($0.12/gl) Price per Unit

$16.99 List Price

$13.03 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fluval Bio Clear Water Treatment, 4-fl oz bottle

Rated 4 out of 5 stars

14

$5.99 Chewy Price

($1.50/fl oz) Price per Unit

$7.99 List Price

$5.69 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Kordon AmQuel Plus Ammonia Detoxifier Aquarium Water Conditioner, 8-oz bottle

Rated 4.6 out of 5 stars

12

$10.24 Chewy Price

($1.28/oz) Price per Unit

$9.73 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Microbe-Lift Aquatic Stress Relief Aquarium Treatment, 16-oz bottle

Rated 4.5 out of 5 stars

2

$10.36 Chewy Price

($0.65/oz) Price per Unit

$17.99 List Price

$9.84 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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biOrb Aquarium Service Kit 3 Plus Water Optimizer

Rated 4.8 out of 5 stars

35

$29.99 Chewy Price

$36.99 List Price

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

Fritz FixIck Aquarium Water Treatment, 8-fl oz bottle

Rated 4.5 out of 5 stars

8

$10.39 Chewy Price

($1.30/fl oz) Price per Unit

$12.99 List Price

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

Salifert Aquarium Carbonate Hardness/Alkalinity Test Kit

Rated 4 out of 5 stars

8

$16.19 Chewy Price

$16.46 List Price

$15.38 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

$39.88 Autoship Price

Free 1-3 day delivery on first-time orders
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Python Multi Purpose Bio-Clean Aquarium Water Care, 1-fl oz bottle

Rated 4.7 out of 5 stars

9

$3.49 Chewy Price

($3.49/fl oz) Price per Unit

$3.32 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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API Proper pH 7.5 Aquarium Water Treatment, 9.2-oz bottle

Rated 4.3 out of 5 stars

16

$11.99 Chewy Price

($1.31/oz) Price per Unit

$15.78 List Price

$11.39 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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CaribSea Eco-Complete Planted Aquarium Substrate, Black, 20-lb bag

Rated 4.4 out of 5 stars

131

$35.99 Chewy Price

($1.80/lb) Price per Unit

$34.19 Autoship Price

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

Aqueon Plant & Shrimp Aquarium Substrate, 5-lb bag

Rated 4.1 out of 5 stars

67

$19.99 Chewy Price

($4.00/lb) Price per Unit

$18.99 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fluval Quick Clear Cloudy Water Treatment, 4-oz bottle

Rated 4.2 out of 5 stars

43

$5.99 Chewy Price

($1.50/oz) Price per Unit

$5.69 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

9

$18.07 Chewy Price

($2.14/fl oz) Price per Unit

$22.89 List Price

$17.17 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Microbe-Lift Herbtana Salt & Freshwater Fish Treatment, 16-oz bottle

Rated 4.5 out of 5 stars

11

$18.42 Chewy Price

($1.16/oz) Price per Unit

$19.55 List Price

$17.50 Autoship Price

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

$12.74 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fritz FritzGuard Aquarium Water Conditioner, 16-fl oz bottle

Rated 5 out of 5 stars

4

$10.39 Chewy Price

($0.65/fl oz) Price per Unit

$12.99 List Price

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

Salifert Aquarium pH Test Kit

$10.92 Chewy Price

$10.37 Autoship Price

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

API Phosphate PO4 Freshwater & Saltwater Aquarium Test Kit, 150 count

Rated 4.7 out of 5 stars

20

$14.98 Chewy Price

($0.10/ea) Price per Unit

$20.98 List Price

$14.23 Autoship Price

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

Python Multi Purpose Bio-Support Aquarium Water Care, 16.2-fl oz bottle

Rated 3.6 out of 5 stars

5

$12.10 Chewy Price

($0.75/fl oz) Price per Unit

$21.99 List Price

$11.50 Autoship Price

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

Tetra EasyStrips Ammonia Freshwater & Saltwater Aquarium Test Strips, 100 count

Rated 4.9 out of 5 stars

28

$15.97 Chewy Price

($0.16/ea) Price per Unit

$33.49 List Price

$15.17 Autoship Price

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

API pH Freshwater Aquarium Test Kit, 250 count

Rated 4.6 out of 5 stars

79

$7.98 Chewy Price

($0.04/ea) Price per Unit

$11.28 List Price

$7.58 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fritz Casuarina Cones, 20 count

Rated 1 out of 5 stars

1

$12.99 Chewy Price

($0.65/ea) Price per Unit

$14.99 List Price

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

Reeflowers Goldfish Fish Aquarium Water Conditioner, 17-fl oz bottle

Rated 5 out of 5 stars

1

$16.63 Chewy Price

($0.98/fl oz) Price per Unit

$15.80 Autoship Price

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

SunGrow Tap Water Conditioner with Beneficial Bacteria for Freshwater Aquarium Treatments Detox...

Rated 4.5 out of 5 stars

16

$6.18 Chewy Price

($0.93/oz) Price per Unit

$9.99 List Price

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

Microbe-Lift Nite Out II Marine Aquarium Water Treatment, 16-oz bottle

Rated 4.3 out of 5 stars

6

$17.38 Chewy Price

($1.09/oz) Price per Unit

$18.48 List Price

$16.51 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fritz Mardel Coppersafe Fish Medication, 4-fl oz bottle

Rated 4.6 out of 5 stars

16

$10.39 Chewy Price

($2.60/fl oz) Price per Unit

$12.99 List Price

Free 1-3 day delivery on first-time orders over $35
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Tetra AlgaeControl Freshwater Aquarium Algaecide, 3.38-fl oz bottle

Rated 3.9 out of 5 stars

77

$6.48 Chewy Price

($1.92/fl oz) Price per Unit

$7.49 List Price

$6.16 Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Salifert Aquarium Calcium Test Kit

Rated 3.7 out of 5 stars

6

$18.63 Chewy Price

$18.81 List Price

$17.70 Autoship Price

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

API Aquarium Starter Kit

Rated 5 out of 5 stars

7

$32.46 Chewy Price

$43.48 List Price

$30.84 Autoship Price

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

Tropical Fish Tank Health & Water Care

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

Activ-Flora Planted Aquarium Substrate, Lake Gems, 20-lb bag

API Aquarium Start-Up Pack

Reeflowers AquaClarify Fish Aquarium Water Conditioner, 2.9-fl oz bottle

Tetra WaterClarifier Freshwater Aquarium Water Conditioner, 8.45-fl oz bottle

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Black

Aqueon AquaPacs Aquarium Water Clarifier, 12 pack, 10-gal

Fluval Bio Clear Water Treatment, 4-fl oz bottle

Kordon AmQuel Plus Ammonia Detoxifier Aquarium Water Conditioner, 8-oz bottle

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

biOrb Aquarium Service Kit 3 Plus Water Optimizer

Fritz FixIck Aquarium Water Treatment, 8-fl oz bottle

Salifert Aquarium Carbonate Hardness/Alkalinity Test Kit

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

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

API Proper pH 7.5 Aquarium Water Treatment, 9.2-oz bottle

CaribSea Eco-Complete Planted Aquarium Substrate, Black, 20-lb bag

Aqueon Plant & Shrimp Aquarium Substrate, 5-lb bag

Fluval Quick Clear Cloudy Water Treatment, 4-oz bottle

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

Microbe-Lift Herbtana Salt & Freshwater Fish Treatment, 16-oz bottle

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

Fritz FritzGuard Aquarium Water Conditioner, 16-fl oz bottle

Salifert Aquarium pH Test Kit

API Phosphate PO4 Freshwater & Saltwater Aquarium Test Kit, 150 count

Python Multi Purpose Bio-Support Aquarium Water Care, 16.2-fl oz bottle

Tetra EasyStrips Ammonia Freshwater & Saltwater Aquarium Test Strips, 100 count

API pH Freshwater Aquarium Test Kit, 250 count

Fritz Casuarina Cones, 20 count

Reeflowers Goldfish Fish Aquarium Water Conditioner, 17-fl oz bottle

SunGrow Tap Water Conditioner with Beneficial Bacteria for Freshwater Aquarium Treatments Detox...

Microbe-Lift Nite Out II Marine Aquarium Water Treatment, 16-oz bottle

Fritz Mardel Coppersafe Fish Medication, 4-fl oz bottle

Tetra AlgaeControl Freshwater Aquarium Algaecide, 3.38-fl oz bottle

Salifert Aquarium Calcium Test Kit

API Aquarium Starter Kit

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