Sort
Filter

Rated 4.8 out of 5 stars
735
$10.98 Chewy Price
($0.69/fl oz) Price per Unit
$15.38 List Price
Autoship Price

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

Rated 4.8 out of 5 stars
395
$21.79 Chewy Price
($0.65/fl oz) Price per Unit
Autoship Price

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

Rated 4.6 out of 5 stars
123
$19.99 Chewy Price
($0.63/fl oz) Price per Unit
$24.99 List Price
Autoship Price

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

Rated 4.5 out of 5 stars
106
$10.39 Chewy Price
($0.65/fl oz) Price per Unit
$14.49 List Price
Autoship Price

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

New
$11.69 Chewy Price
($0.59/ea) Price per Unit
$13.99 List Price
Autoship Price

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

Rated 4.7 out of 5 stars
357
$25.75 Chewy Price
($0.04/ea) Price per Unit
$50.48 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
128
$36.99 Chewy Price
($2.11/lb) Price per Unit
$67.99 List Price
Autoship Price

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

Rated 4.8 out of 5 stars
479
$7.18 Chewy Price
($0.45/fl oz) Price per Unit
$11.98 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
68
$5.69 Chewy Price
($2.85/fl oz) Price per Unit
$7.99 List Price
Autoship Price

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

Rated 4.5 out of 5 stars
131
$9.98 Chewy Price
($1.00/ea) Price per Unit
$13.98 List Price
Autoship Price

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

Rated 4.7 out of 5 stars
36
$27.99 Chewy Price
($27.99/lb) Price per Unit
$28.95 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
209
$17.38 Chewy Price
($1.09/fl oz) Price per Unit
$24.38 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
152
$13.83 Chewy Price
($0.14/ea) Price per Unit
$37.49 List Price
Autoship Price

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

Rated 4.7 out of 5 stars
53
$15.99 Chewy Price
($1.00/fl oz) Price per Unit
$19.99 List Price
Autoship Price

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

Rated 4.7 out of 5 stars
150
$11.49 Chewy Price
($0.72/fl oz) Price per Unit
$13.29 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
99
$3.99 Chewy Price
($0.50/ea) Price per Unit
Autoship Price

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

Rated 4.6 out of 5 stars
28
$10.49 Chewy Price
($0.63/fl oz) Price per Unit
Autoship Price

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

Rated 4.5 out of 5 stars
153
$6.93 Chewy Price
$9.99 List Price
Autoship Price

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

Rated 4.5 out of 5 stars
444
$68.98 Chewy Price
($68.98/gl) Price per Unit
$96.98 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
103
$12.28 Chewy Price
($0.77/oz) Price per Unit
$17.18 List Price
Autoship Price

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

Rated 4.8 out of 5 stars
228
$15.48 Chewy Price
($0.97/fl oz) Price per Unit
$22.78 List Price
Autoship Price

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

Rated 4.7 out of 5 stars
106
$27.85 Chewy Price
($0.88/oz) Price per Unit
$27.95 List Price
Autoship Price

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

Rated 5 out of 5 stars
1
$6.99 Chewy Price
($1.73/fl oz) Price per Unit
Autoship Price

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

Rated 4.6 out of 5 stars
194
$13.87 Chewy Price
($0.83/fl oz) Price per Unit
$15.59 List Price
Autoship Price

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

Rated 4.4 out of 5 stars
59
$13.99 Chewy Price
($0.88/oz) Price per Unit
$17.48 List Price
Autoship Price

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

Rated 4.6 out of 5 stars
57
$10.15 Chewy Price
($0.64/oz) Price per Unit
$13.99 List Price
Autoship Price

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

Rated 4.4 out of 5 stars
144
$4.98 Chewy Price
($0.63/ea) Price per Unit
Autoship Price

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

Rated 4.7 out of 5 stars
70
$9.99 Chewy Price
($1.19/fl oz) Price per Unit
$16.99 List Price
Autoship Price

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

Rated 4.2 out of 5 stars
38
$5.93 Chewy Price
($0.12/ea) Price per Unit
$9.99 List Price
Autoship Price

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

Rated 4.5 out of 5 stars
307
$9.48 Chewy Price
($1.19/fl oz) Price per Unit
$13.28 List Price
Autoship Price

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

Rated 4.4 out of 5 stars
136
$35.99 Chewy Price
($1.80/lb) Price per Unit
Autoship Price

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

Rated 3.6 out of 5 stars
23
$16.63 Chewy Price
($0.07/mL) Price per Unit
$29.99 List Price
Autoship Price

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

Rated 4.1 out of 5 stars
226
$16.98 Chewy Price
($1.07/fl oz) Price per Unit
$23.78 List Price
Autoship Price

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

Rated 4.4 out of 5 stars
7
$12.08 Chewy Price
($0.76/fl oz) Price per Unit
$12.99 List Price
Autoship Price

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

Rated 4.8 out of 5 stars
53
$5.52 Chewy Price
($1.64/fl oz) Price per Unit
$6.29 List Price
Autoship Price

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

Rated 4.8 out of 5 stars
105
$17.64 Chewy Price
($0.56/fl oz) Price per Unit
$22.58 List Price
Autoship Price

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

Aquarium & Fish Tank Water Care

Keeping your aquarium water clean and balanced is one of the most important parts of fishkeeping. Fish tank water care helps support a healthy environment for your fish by managing things like chlorine, ammonia, and pH levels. Whether you're cycling a new tank or maintaining an established one, having the right tools on hand can make water care a lot easier.

  • Water conditioners: Help remove chlorine, chloramine, and heavy metals from tap water
  • Ammonia control: Useful for managing ammonia levels and keeping water safe
  • pH adjusters: Help create stable water conditions for different fish species
  • Bacterial supplements: Support a healthy nitrogen cycle by adding beneficial bacteria
  • Testing tools: Make it easy to check water parameters like ammonia, nitrite, nitrate, and pH

A solid aquarium water care routine can prevent a lot of common problems down the line. Testing your water regularly and making small adjustments as needed can go a long way in keeping your tank clean and your fish feeling their best.

Frequently Asked Questions about Aquarium & Fish Tank Water Care

How do you maintain water in an aquarium?

Start by using a water conditioner when adding tap water, then test regularly to keep an eye on things like ammonia, pH, and nitrate levels. Partial water changes and a good filter also help keep conditions stable.

How often should I change fish tank water?

Most tanks do well with a partial water change once a week, usually around 10 to 25 percent. It can vary based on your tank size, how many fish you have, and how much waste builds up.