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)

Slide 1 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 2 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 3 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 4 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 5 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 6 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 7 of 8

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count slide 8 of 8

Slide 1 of 8

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

Rated 4.7 out of 5 stars

45

$11.00 Chewy Price

($0.13/ea) Price per Unit

$19.78 List Price

$10.45 Autoship Price

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

Fritz FritzZyme Trace Aquarium Water Treatment, 16-fl oz bottle

Rated 4.3 out of 5 stars

6

$12.08 Chewy Price

($0.76/fl oz) Price per Unit

$12.99 List Price

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

Slide 1 of 2

Fluval Curved Aquarium Scissors, 9.8-inch slide 2 of 2

Fluval Curved Aquarium Scissors, 9.8-inch

Rated 4.7 out of 5 stars

15

$16.86 Chewy Price

$22.99 List Price

$16.02 Autoship Price

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

AquaZen Algae Remover, 4.06-fl oz bottle

Rated 5 out of 5 stars

2

$7.00 Chewy Price

($1.73/fl oz) Price per Unit

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

Pure Water Pebbles African Cichlid Aquarium Substrate, Malawi Mix, 20-lb bag

Rated 4.3 out of 5 stars

32

$23.44 Chewy Price

($1.18/lb) Price per Unit

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

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

Rated 4.7 out of 5 stars

10

$10.02 Chewy Price

($1.26/oz) Price per Unit

$11.85 List Price

$9.52 Autoship Price

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

Fritz Expel-F Aquarium Water Treatment, 20 count

Rated 4.5 out of 5 stars

8

$21.24 Chewy Price

($1.07/ea) Price per Unit

$24.99 List Price

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

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

Rated 4.2 out of 5 stars

30

$9.99 Chewy Price

($0.40/ea) Price per Unit

$26.39 List Price

$9.49 Autoship Price

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

Salifert Aquarium Phosphate Test Kit

Rated 5 out of 5 stars

4

$19.61 Chewy Price

$18.63 Autoship Price

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

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

Rated 3.4 out of 5 stars

59

$53.59 Chewy Price

($6.70/fl oz) Price per Unit

$65.99 List Price

$50.91 Autoship Price

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

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Brown

Rated 5 out of 5 stars

2

$68.35 Chewy Price

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

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

$17.48 List Price

$11.86 Autoship Price

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

Kordon Fish Protector Aquarium Water Conditioner, 16-fl oz bottle

Rated 4.6 out of 5 stars

7

$10.99 Chewy Price

($0.69/fl oz) Price per Unit

$10.44 Autoship Price

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

CaribSea Eco-Complete Planted Aquarium Substrate, 10-lb bag

Rated 4.6 out of 5 stars

36

$17.42 Chewy Price

($1.75/lb) Price per Unit

$16.55 Autoship Price

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

Dennerle NPK Booster Macro-Fertilizer Aquarium Plant Fertilizer, 100-mL bottle

Rated 4.3 out of 5 stars

6

$12.99 Chewy Price

($0.13/mL) Price per Unit

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

Microbe-Lift TheraP Aquarium Fish Water Treatment, 16-oz bottle

Rated 3.3 out of 5 stars

7

$16.64 Chewy Price

($1.04/oz) Price per Unit

$19.55 List Price

$15.81 Autoship Price

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

API Aquarium Water Conditioner & Tropical Fish Food Kit

Rated 4.9 out of 5 stars

9

$42.88 Chewy Price

$40.74 Autoship Price

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

Fritz Slime Out Fish Treatment, 20 count

Rated 5 out of 5 stars

3

$22.39 Chewy Price

($1.12/ea) Price per Unit

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

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

$17.09 Chewy Price

($2.14/oz) Price per Unit

$20.99 List Price

$16.24 Autoship Price

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

Salifert Aquarium Ammonia Test Kit

Rated 4 out of 5 stars

7

$13.99 Chewy Price

$13.29 Autoship Price

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

Fluval Nitrate Fish Water Test Kit

Rated 3.7 out of 5 stars

3

$22.99 Chewy Price

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

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

Rated 4.1 out of 5 stars

21

$14.98 Chewy Price

($0.94/fl oz) Price per Unit

$14.23 Autoship Price

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

API KH Carbonate Hardness Fresh & Salt Water Aquarium Test Kit

Rated 4.8 out of 5 stars

12

$8.75 Chewy Price

$12.78 List Price

$8.31 Autoship Price

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

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

Rated 4.5 out of 5 stars

12

$13.99 Chewy Price

($0.12/gl) Price per Unit

$16.99 List Price

$13.29 Autoship Price

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

Dr. Tim's Aquatics Shrimp Water Conditioner, 32-fl oz bottle

$7.98 Chewy Price

($0.25/fl oz) Price per Unit

$8.99 List Price

$7.58 Autoship Price

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

Fritz Nature Box Plant Care

Rated 1 out of 5 stars

1

$11.98 Chewy Price

$15.99 List Price

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

Microbe-Lift Algaway 5.4 Algae Control Aquarium Algaecide, 16-oz bottle

Rated 4.1 out of 5 stars

14

$14.99 Chewy Price

($0.94/oz) Price per Unit

$14.24 Autoship Price

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

API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count

Rated 5 out of 5 stars

6

$16.78 Chewy Price

($0.10/ea) Price per Unit

$15.94 Autoship Price

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

Salifert Aquarium Nitrite Test Kit

Rated 5 out of 5 stars

1

$11.69 Chewy Price

$11.86 List Price

$11.11 Autoship Price

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

API Melafix Freshwater Fish Bacterial Infection Remedy, 64-fl oz bottle

Rated 4.8 out of 5 stars

18

$53.07 Chewy Price

($0.83/fl oz) Price per Unit

$100.38 List Price

$50.42 Autoship Price

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

Boyd Chemi-Clean Red Cyanobacteria Aquarium Treatment, 2-g

Rated 4.8 out of 5 stars

20

$17.99 Chewy Price

($9.00/g) Price per Unit

$24.01 List Price

$17.09 Autoship Price

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

Fluval Spring Aquarium Scissors, 5.9-inch

Rated 4 out of 5 stars

1

$19.99 Chewy Price

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

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

Rated 3.9 out of 5 stars

14

$30.45 Chewy Price

($0.48/fl oz) Price per Unit

$36.99 List Price

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

API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count

Rated 4.3 out of 5 stars

12

$16.22 Chewy Price

($0.65/ea) Price per Unit

$23.98 List Price

$15.41 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 4.5 out of 5 stars

17

$15.14 Chewy Price

($1.27/ea) Price per Unit

$16.99 List Price

$14.38 Autoship Price

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

New

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

$35.99 Chewy Price

($18.00/ea) Price per Unit

$34.19 Autoship Price

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

Tropical Fish Tank Health & Water Care

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

Fritz FritzZyme Trace Aquarium Water Treatment, 16-fl oz bottle

Fluval Curved Aquarium Scissors, 9.8-inch

AquaZen Algae Remover, 4.06-fl oz bottle

Pure Water Pebbles African Cichlid Aquarium Substrate, Malawi Mix, 20-lb bag

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

Fritz Expel-F Aquarium Water Treatment, 20 count

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

Salifert Aquarium Phosphate Test Kit

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

OASE Indoor Aquatics ScaperLine 9 Fish Soil, Brown

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

Kordon Fish Protector Aquarium Water Conditioner, 16-fl oz bottle

CaribSea Eco-Complete Planted Aquarium Substrate, 10-lb bag

Dennerle NPK Booster Macro-Fertilizer Aquarium Plant Fertilizer, 100-mL bottle

Microbe-Lift TheraP Aquarium Fish Water Treatment, 16-oz bottle

API Aquarium Water Conditioner & Tropical Fish Food Kit

Fritz Slime Out Fish Treatment, 20 count

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

Salifert Aquarium Ammonia Test Kit

Fluval Nitrate Fish Water Test Kit

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

API KH Carbonate Hardness Fresh & Salt Water Aquarium Test Kit

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

Dr. Tim's Aquatics Shrimp Water Conditioner, 32-fl oz bottle

Fritz Nature Box Plant Care

Microbe-Lift Algaway 5.4 Algae Control Aquarium Algaecide, 16-oz bottle

API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count

Salifert Aquarium Nitrite Test Kit

API Melafix Freshwater Fish Bacterial Infection Remedy, 64-fl oz bottle

Boyd Chemi-Clean Red Cyanobacteria Aquarium Treatment, 2-g

Fluval Spring Aquarium Scissors, 5.9-inch

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

API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count

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

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

Product Type

Fish Type

Aquarium Type

Brand

Deals & Savings

Price

Customer Rating