Aquarium & Fish Tank Water Conditioner & Dechlorinator

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Rated 4.8 out of 5 stars
703
$10.98 Chewy Price
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Rated 4.8 out of 5 stars
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$21.79 Chewy Price
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Rated 4.7 out of 5 stars
115
$19.99 Chewy Price
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Rated 4.8 out of 5 stars
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$8.48 Chewy Price
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$11.98 List Price
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Rated 4.7 out of 5 stars
141
$36.99 Chewy Price
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Rated 3.9 out of 5 stars
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$5.97 Chewy Price
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Rated 4.6 out of 5 stars
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Rated 4.5 out of 5 stars
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$6.93 Chewy Price
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Rated 4.6 out of 5 stars
197
$17.38 Chewy Price
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Rated 4.8 out of 5 stars
46
$15.99 Chewy Price
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Rated 4.5 out of 5 stars
42
$13.99 Chewy Price
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Rated 4.9 out of 5 stars
76
$9.32 Chewy Price
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Rated 4.8 out of 5 stars
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$16.99 Chewy Price
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Rated 4.6 out of 5 stars
40
$8.99 Chewy Price
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Rated 4.6 out of 5 stars
27
$10.49 Chewy Price
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Rated 4.3 out of 5 stars
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$7.79 Chewy Price
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Rated 4.6 out of 5 stars
65
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Rated 5 out of 5 stars
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$14.53 Chewy Price
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Rated 4.8 out of 5 stars
219
$15.49 Chewy Price
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Rated 4 out of 5 stars
42
$15.99 Chewy Price
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Rated 4.5 out of 5 stars
2
$10.36 Chewy Price
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Rated 4.8 out of 5 stars
47
$5.52 Chewy Price
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$6.29 List Price

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Rated 4.6 out of 5 stars
187
$13.87 Chewy Price
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Rated 4.6 out of 5 stars
66
$8.68 Chewy Price
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Rated 3.8 out of 5 stars
18
$13.99 Chewy Price
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Rated 4 out of 5 stars
33
$5.99 Chewy Price
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Rated 4.8 out of 5 stars
20
$12.55 Chewy Price
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Rated 4.6 out of 5 stars
8
$8.06 Chewy Price
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Rated 5 out of 5 stars
1
$13.37 Chewy Price
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Rated 4.4 out of 5 stars
57
$13.99 Chewy Price
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Rated 4 out of 5 stars
20
$13.59 Chewy Price
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Rated 5 out of 5 stars
38
$4.98 Chewy Price
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$5.46 List Price
$4.73 Autoship Price

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Rated 4.6 out of 5 stars
22
$3.49 Chewy Price
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$3.32 Autoship Price

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Rated 4.6 out of 5 stars
16
$6.27 Chewy Price
($1.86/oz) Price per Unit
$7.29 List Price

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Aquarium & Fish Tank Water Conditioner & Dechlorinator

Aquarium water conditioners do the hard work so your fish can just keep swimming! Tap water contains chlorine, heavy metals, and other chemicals that can be harmful to fish, but the right water conditioner helps neutralize these elements to create a safe, healthy environment. Whether you're setting up a new tank or performing routine water changes, a quality aquarium water conditioner ensures your fish stay happy and stress-free. Some key considerations when selecting aquarium water conditioners includes:

  • Chlorine and ammonia removal: Many conditioners neutralize harmful chemicals found in tap water
  • Freshwater vs. saltwater: Some formulas are designed for specific aquarium types
  • Beneficial bacteria support: Certain conditioners help maintain a balanced ecosystem by supporting the nitrogen cycle
  • Dosage and concentration: Different products require varying amounts per gallon of water
  • Speed of action: Fast-acting conditioners work instantly, while others may require a brief waiting period before adding fish

Using an aquarium water conditioner regularly helps keep your tank's water safe and balanced for all its inhabitants. With Chewy.com's Autoship service, you can have your preferred water conditioner delivered on a schedule that works for you, ensuring your fish always have the clean water they need.

Frequently Asked Questions about Aquarium & Fish Tank Water Conditioner & Dechlorinator

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.