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 4 (Free Shipping)

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API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count

Rated 4.7 out of 5 stars

46

$13.98 Chewy Price

($0.16/ea) Price per Unit

$19.78 List Price

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Fritz Casuarina Cones, 20 count

Rated 2 out of 5 stars

2

$12.99 Chewy Price

($0.65/ea) Price per Unit

$14.99 List Price

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Dr. Tim's Aquatics One & Only Live Nitrifying Bacteria for Freshwater Aquariums, 8-fl oz bottle slide 2 of 8

Dr. Tim's Aquatics One & Only Live Nitrifying Bacteria for Freshwater Aquariums, 8-fl oz bottle slide 3 of 8

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Dr. Tim's Aquatics One & Only Live Nitrifying Bacteria for Freshwater Aquariums, 8-fl oz bottle...

Rated 3.4 out of 5 stars

60

$53.59 Chewy Price

($6.70/fl oz) Price per Unit

$65.99 List Price

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Salifert Aquarium pH Test Kit

Rated 5 out of 5 stars

1

$10.92 Chewy Price

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Kordon Ich Attack Aquarium Ich Treatment, 16-fl oz bottle

Rated 4.1 out of 5 stars

24

$14.98 Chewy Price

($0.94/fl oz) Price per Unit

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Microbe-Lift Xtreme Aquarium Water Treatment, 8-oz bottle

Rated 4.7 out of 5 stars

10

$10.85 Chewy Price

($1.36/oz) Price per Unit

$11.85 List Price

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OASE Indoor Aquatics ScaperLine 9 Fish Soil, Black

$69.41 Chewy Price

($69.41/ea) Price per Unit

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

Rated 4 out of 5 stars

15

$36.99 Chewy Price

($0.58/fl oz) Price per Unit

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Tetra EasyStrips Complete Freshwater & Saltwater Aquarium Test Strips, 25 count

Rated 4.2 out of 5 stars

32

$9.99 Chewy Price

($0.40/ea) Price per Unit

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Fluval Quick Clear Cloudy Water Treatment, 4-oz bottle

Rated 4.3 out of 5 stars

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$5.99 Chewy Price

($1.50/oz) Price per Unit

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Fritz ParaCleanse Aquarium Water Treatment, 20 count

Rated 4.1 out of 5 stars

23

$22.39 Chewy Price

($1.12/ea) Price per Unit

$27.99 List Price

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

Rated 4.7 out of 5 stars

21

$14.98 Chewy Price

($0.10/ea) Price per Unit

$20.98 List Price

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Fluval Disposable CO2 Cartridge Fish CO2 Care, 3 count

Rated 3.5 out of 5 stars

6

$34.98 Chewy Price

($11.66/ea) Price per Unit

$69.99 List Price

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API KH Carbonate Hardness Fresh & Salt Water Aquarium Test Kit

Rated 4.8 out of 5 stars

13

$8.75 Chewy Price

$12.78 List Price

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Salifert Aquarium Carbonate Hardness/Alkalinity Test Kit

Rated 4.3 out of 5 stars

11

$16.46 Chewy Price

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Dr. Tim's Aquatics Re-Fresh Freshwater Tank Revitalizer, 8-fl oz bottle

Rated 4.7 out of 5 stars

6

$26.99 Chewy Price

($3.38/fl oz) Price per Unit

$39.99 List Price

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

Rated 4.7 out of 5 stars

20

$38.25 Chewy Price

($1.92/lb) Price per Unit

$54.99 List Price

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API Copper Cu+ Freshwater & Saltwater Aquarium Test Kit, 90 count

Rated 4.3 out of 5 stars

4

$12.48 Chewy Price

($0.14/ea) Price per Unit

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Tetra AquaSafe Aquarium Water Conditioner, 8.45-fl oz bottle

Rated 4.9 out of 5 stars

83

$9.32 Chewy Price

($1.11/fl oz) Price per Unit

$10.89 List Price

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Salifert Aquarium Magnesium Test Kit

Rated 4.8 out of 5 stars

6

$19.61 Chewy Price

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

Rated 4.6 out of 5 stars

18

$14.97 Chewy Price

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Fritz FixIck Aquarium Water Treatment, 16-fl oz bottle

Rated 4.5 out of 5 stars

8

$15.99 Chewy Price

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Fritz Bug Out Pro Coral Dip, 4-fl oz bottle

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Fluval Supply Set Fish CO2 Care

Rated 3 out of 5 stars

9

$74.79 Chewy Price

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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

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Salifert Aquarium Calcium Test Kit

Rated 3.9 out of 5 stars

7

$17.99 Chewy Price

$18.81 List Price

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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

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Free 1-3 day delivery on first-time orders over $35
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OASE Indoor Aquatics ScaperLine 9 Fish Soil, Brown

Rated 5 out of 5 stars

3

$68.35 Chewy Price

Autoship Price

Free 1-3 day delivery on first-time orders
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API High Range pH Fresh & Salt Water Aquarium Test Kit, 160 count

Rated 4.8 out of 5 stars

10

$9.48 Chewy Price

($0.06/ea) Price per Unit

$13.28 List Price

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

Rated 4.5 out of 5 stars

31

$34.76 Chewy Price

($1.09/fl oz) Price per Unit

$47.98 List Price

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Salifert Aquarium Nitrate Test Kit

Rated 4.8 out of 5 stars

6

$17.12 Chewy Price

$17.37 List Price

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

Rated 3.8 out of 5 stars

18

$11.43 Chewy Price

($0.10/gl) Price per Unit

$16.99 List Price

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

Rated 3.7 out of 5 stars

18

$36.99 Chewy Price

($0.58/fl oz) Price per Unit

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Microbe-Lift Artemiss Salt & Freshwater Water Treatment, 16-oz bottle

Rated 4.4 out of 5 stars

16

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Rated 2.5 out of 5 stars

2

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API Replacement Test Tubes for Aquarium Liquid Test Kits, 24 count

Rated 3.3 out of 5 stars

22

$29.98 Chewy Price

($1.25/ea) Price per Unit

$41.98 List Price

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Free 1-3 day delivery on first-time orders over $35
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Tropical Fish Tank Health & Water Care

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count

Fritz Casuarina Cones, 20 count

Dr. Tim's Aquatics One & Only Live Nitrifying Bacteria for Freshwater Aquariums, 8-fl oz bottle...

Salifert Aquarium pH Test Kit

Kordon Ich Attack Aquarium Ich Treatment, 16-fl oz bottle

Microbe-Lift Xtreme Aquarium Water Treatment, 8-oz bottle

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Black

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

Tetra EasyStrips Complete Freshwater & Saltwater Aquarium Test Strips, 25 count

Fluval Quick Clear Cloudy Water Treatment, 4-oz bottle

Fritz ParaCleanse Aquarium Water Treatment, 20 count

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

Fluval Disposable CO2 Cartridge Fish CO2 Care, 3 count

API KH Carbonate Hardness Fresh & Salt Water Aquarium Test Kit

Salifert Aquarium Carbonate Hardness/Alkalinity Test Kit

Dr. Tim's Aquatics Re-Fresh Freshwater Tank Revitalizer, 8-fl oz bottle

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

API Copper Cu+ Freshwater & Saltwater Aquarium Test Kit, 90 count

Tetra AquaSafe Aquarium Water Conditioner, 8.45-fl oz bottle

Salifert Aquarium Magnesium Test Kit

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

Fritz FixIck Aquarium Water Treatment, 16-fl oz bottle

Fritz Bug Out Pro Coral Dip, 4-fl oz bottle

Fluval Supply Set Fish CO2 Care

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

Salifert Aquarium Calcium Test Kit

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

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Brown

API High Range pH Fresh & Salt Water Aquarium Test Kit, 160 count

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

Salifert Aquarium Nitrate Test Kit

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

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

Microbe-Lift Artemiss Salt & Freshwater Water Treatment, 16-oz bottle

Fritz Nature Box Plant Care

API Replacement Test Tubes for Aquarium Liquid Test Kits, 24 count

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