Get Fast, Free Shipping with Amazon Prime FREE Returns

FREE delivery Friday, February 10 if you spend $25 on items shipped by Amazon. Order within 5 hrs 29 mins

In Stock.

[{"displayPrice":"$12.98","priceAmount":12.98,"currencySymbol":"$","integerValue":"12","decimalSeparator":".","fractionalValue":"98","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"NsVPwn7cpoizHGPct1wIUAR4RvWD56%2BZD0g5qnp8vvVGqCbc%2FXD7zugzrRyrUPzEmaPNXRxmlv1UN8syKeOYAT%2B5wM6%2FAx%2BkcoDdUKazq%2FpIED%2BQifIQ97OusxfBkCH4h7NZ9O7G4TLK9sgToCavog%3D%3D","locale":"en-US","buyingOptionType":"NEW"},{"displayPrice":"$12.33","priceAmount":12.33,"currencySymbol":"$","integerValue":"12","decimalSeparator":".","fractionalValue":"33","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":null,"locale":"en-US","buyingOptionType":"SNS"}]

$$12.98 () Includes selected options. Includes initial monthly payment and selected options. Details

Enhancements you chose aren't available for this seller. Details

${cardName} not available for the seller you chose

${cardName} unavailable for quantities greater than ${maxQuantity}.

Secure transaction

Ships from

Amazon.com

Sold by

Amazon.com

Details

Ships from

Amazon.com

Sold by

Amazon.com

Return policy: Eligible for Return, Refund or Replacement within 30 days of receipt

Add a gift receipt for easy returns

In Stock.

Deliver every:

$$12.98 () Includes selected options. Includes initial monthly payment and selected options. Details

Enhancements you chose aren't available for this seller. Details

${cardName} not available for the seller you chose

${cardName} unavailable for quantities greater than ${maxQuantity}.

Ships from and sold by Amazon.com

Other Sellers on Amazon

Added

Not added

$12.98
& FREE Shipping

Sold by: Champion Lighting and Supply Co.

Added

Not added

$12.98
& FREE Shipping

Sold by: Petco

Added

Not added

$14.79
& FREE Shipping

Sold by: Kens Fish

Have one to sell?

Sell on Amazon

VIDEO

Image Unavailable

Image not available for
Color:

To view this video download Flash Player

API 5-in-1 Test Strips Freshwater and Saltwater Aquarium Test Strips 25-Count Box

Visit the API Store

9,664 ratings

| 34 answered questions

Price:

$12.98 Get Fast, Free Shipping with Amazon Prime FREE Returns

Size: 25-Count

Style: Aquarium Water Testing

Enhance your purchase

Brand	API
Number of Channels	5
Item Dimensions LxWxH	3.5 x 1.75 x 6.5 inches
Item Weight	0.2 Pounds

About this item

This fits your .

Make sure this fits by entering your model number.

Contains one (1) API 5-IN-1 TEST STRIPS Freshwater and Saltwater Aquarium Test Strips 25-Count Box
Monitors levels of pH, nitrite, nitrate carbonate and general water hardness in freshwater and saltwater aquariums
Dip test strips into aquarium water and check colors for fast and accurate results
Helps prevent invisible water problems that can be harmful to fish and cause fish loss
Use for weekly monitoring and when water or fish problems appear

Special offers and product promotions

Save $30 when you spend $100 Enter code 174CBBA9 at checkout. Offered by Amazon.com See more products in this promotion

Frequently bought together

Total price:

To see our price, add these items to your cart.

Choose items to buy together.

$12.98
In Stock.
Ships from and sold by Amazon.com.
Get it as soon as Friday, Feb 10
$10.48
In Stock.
Ships from and sold by Amazon.com.
Get it as soon as Friday, Feb 10
$7.98
In Stock.
Ships from and sold by Amazon.com.
Get it as soon as Friday, Feb 10

20,495
Amazon's Choice
in Aquarium Water Treatments
9 offers from $7.98
2,440
Amazon's Choice
in Aquarium Test Kits
1 offer from $14.99
2,015
4 offers from $9.13
155
9 offers from $7.96
603
10 offers from $10.07
454
3 offers from $10.78

Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 3.5 x 1.75 x 6.5 inches; 3.2 Ounces
Item model number ‏ : ‎ 33G
Department ‏ : ‎ mens
Date First Available ‏ : ‎ October 15, 2006
Manufacturer ‏ : ‎ Mars Fishcare
ASIN ‏ : ‎ B000HHOAIY
Country of Origin ‏ : ‎ USA

Best Sellers Rank: #2,215 in Pet Supplies (See Top 100 in Pet Supplies)
- #2 in Aquarium Test Kits

Customer Reviews:
9,664 ratings

Product Description

Keep your fish healthy and thriving by testing your aquarium water regularly with easy-to-use API 5-in-1 TEST STRIPS. API 5-in-1 TEST STRIPS for freshwater and saltwater aquarium help fish owners measure levels of Nitrite, Nitrate, Carbonate & General Hardness, and pH found in aquarium water. In order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even death. Just dip a strip directly into your aquarium and use the color-coded chart to determine if your water is safe, or if adjustments are needed. Then follow the recommendations to treat the water – it’s that simple. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.

Important information

Safety Information

Please Read Instructions Before Use

Ingredients

Contains 25 Test Strips.

From the manufacturer

Testing the Waters

In order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. Most common water quality parameters are Ammonia, Nitrite, Nitrate, and pH. All may vary over time and all are invisible to the eye which is why it is important to test weekly. Testing aquarium water weekly will aid in keeping your most important water parameters within the proper range for your aquarium. Choose from a wide range of API testing options, such as our popular FRESHWATER MASTER TEST KIT or 5-IN-1 TEST STRIPS, for accurate water evaluation. Regular testing will help you easily determine your aquarium conditions.


Your API Test Options Choose the test method that works best for you. Whether you’re a bit pressed for time, or you prefer to measure your parameters on a more in-depth scale, or you only need to test one or two specific parameters, API has what you need!	Dip and Read Just dip a 5-in-1 TEST STRIP in your aquarium, swirl twice, and compare to our color chart for fast and accurate results.	The Scientific Approach For more detailed analysis, use the FRESHWATER MASTER TEST KIT, POND MASTER TEST KIT, SALTWATER MASTER TEST KIT, or REEF MASTER TEST KIT for precise readings of parameters.	Pick One (or Two) Need to check your phosphate levels? What about ammonia? API offers specific test kits to test many different parameters, from general hardness and copper to pH and nitrate. Grab the one you need for a streamlined approach to testing.


	API QUICK START	API AMMO-LOCK	API pH UP	API pH DOWN	API NITRA-ZORB	API PHOS-ZORB
Too much nitrites?	✓				✓
Too much ammonia?	✓	✓			✓
Inappropriate pH levels?			✓	✓
Too much nitrates?					✓
Too much phosphates?						✓

Making a Better Underwater World

At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world.

Looking for specific info?

See questions and answers

Customer reviews

4.6 out of 5

9,664 global ratings

5 star		74%
4 star		15%
3 star		7%
2 star		2%
1 star		3%

How customer reviews and ratings work

Reviews with images

See all customer images

Top reviews from the United States

There was a problem filtering reviews right now. Please try again later.

Linda T Nguyen

I don’t know

Reviewed in the United States 🇺🇸 on December 22, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Honestly I wouldn’t be able to tell if this was accurate or not because then I would need to buy another testing kit to compare this. My fish’s fins have been ripping and it wasn’t an environmental issues because I have minimal decor (a barrel and a smooth rock) and so I tested the water and everything is normal. But I can’t test accuracy without getting another one.It is easy to read though.

Helpful

Daisy

Convenient

Reviewed in the United States 🇺🇸 on December 9, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

I test the tank water every week and these are easy to use and read.

Helpful

Madison Kulig

I think it works?

Reviewed in the United States 🇺🇸 on October 9, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

This is the first time ordering test strips so I am not very familiar with them. I’ve used these about 4 times now and the results seem to be good. Not sure how accurate the strips are versus the test kits.

One person found this helpful

Helpful

Garage Rat

For on the fly

Reviewed in the United States 🇺🇸 on October 14, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Next to the pro stuff it's very convenient and will let you know if your water is going out of line. Not super accurate but they wir K fine...

Helpful

do you have a Betta fish?

Reviewed in the United States 🇺🇸 on June 1, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

My 12 yrs old son wanted a fish tank so we got him 2.5 gallon tank with a Betta fish.
My son did all the necessary research himself to find out how to maintain and keep the fish healthy and he purchased this water test strip along with a water conditioner.

He uses the water conditioner every time he changes the water then uses this strip to test the water for pH, nitrite, nitrate carbonate and general water hardness level.

It's been 4 months since we purchased the Betta fish and the fish is still doing well and looks happy and health, thanks to the water conditioner and this test strip.

Definitely recommend this test strip for anyone who has a Betta fish as a pet.
You might want to consider buying a water conditioner in case you need to neutralize or balance the level of pH, nitrite, etc.

87 people found this helpful

Helpful

ViDominic

Works great but no ammonia reading.

Reviewed in the United States 🇺🇸 on July 7, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Granted, it's my own fault for not reading the details closely enough. But this product does NOT measure ammonia levels. Otherwise, its a great product for measuring water quality.

3 people found this helpful

Helpful

Michael & Kari

Very Helpful

Reviewed in the United States 🇺🇸 on October 6, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Comes in handy when things go wrong. A little hard to read for beginners though. I don’t consider myself an expert, so learning how to read it took a little research.

One person found this helpful

Helpful

Drue Templin

It has arrived

Reviewed in the United States 🇺🇸 on October 30, 2022

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Came on time.. exactly what i ordered!

Helpful

Top reviews from other countries

debzi

Perfect

Reviewed in the United Kingdom 🇬🇧 on September 19, 2019

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

These are great, I had to google to find out what is a good reading how your water should be, so I marked it on the tube - so anything between the black lines are good, hope this helps.

226 people found this helpful

P. J. Menter

Useful for aquarium set up and longer term water maintenance

Reviewed in the United Kingdom 🇬🇧 on January 20, 2021

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

The test strips are made up of five small pads each about 4mm Square, the pads coincide with the reference colours on the tube markings that indicate by colour the relevant readings in parts per million (ppm). If you are colour blind there may be problems but I was easily able to ascertain the ppm levels and interpret slight shade differences to read between the base readings. It is best to hold the strips in your left hand when making the test as the strip will then be correctly orientated to make readings. The guidance notes included with the test kit are comprehensive and provide guidance on the levels for an ideal aquarium. I am two weeks into maturing a black water tank for South American cichlids and currently test every four days. When the nitrite levels are stable at ZERO I will add one small fish to ensure a stable environment - my maturing method is fishless.

4 people found this helpful

Emteq

OK for a quick check all is well.

Reviewed in the United Kingdom 🇬🇧 on November 21, 2015

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

Good, but no ammonia test, which is probably better done with a liquid test. Otherwise OK for a quick check all is well.

Don't forget you can cut the strip longways into two, so you can double-up for the same £!

42 people found this helpful

The Muddy Allotment

Easy to use - Accuracy is quite general

Reviewed in the United Kingdom 🇬🇧 on December 28, 2021

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

This is good to give me an idea of where my levels are at. I don’t require pinpoint accuracy so these are fine for me.

I have no fish yet so nitrites and nitrates are where they should be. PH is where I expected it for my area, as is KH slightly hard. The GH for general hardness will have spiked due to substrate added whilst planting so is not unexpected.

As you can see from my image some interpretation is required, and confidence to accept that they are correct. I’ll keep this under review as I compete my cycle and add fish.

Steve F

5 in 1 test sticks which are quick and easy to use.

Reviewed in the United Kingdom 🇬🇧 on June 27, 2017

Size: 25-CountStyle: Aquarium Water TestingVerified Purchase

This is very straightforward to use and with 25 test sticks for the price, seems like good value.

I haven't tested it against another test kit to see how accurate it is but I used three sticks to do the following tests; water from the tap, water from the fish tank prior to a part water change and 'clean' water from my RO system. The differences were as expected and when comparing tap water to my freshly made RO water, really highlighted the value of a RO system.

It is easy to use, put the stick in the water, swirl it around a couple of times, lift it out and watch the colours develop. Nitrate test takes about 30 seconds to return result but hardness and pH tests are pretty much instant.

Would recommend.

4 people found this helpful

See all reviews

One-time purchase: $12.98$12.98 FREE delivery: Friday, Feb 10 on orders over $25.00 shipped by Amazon. Ships from: Amazon.com Sold by: Amazon.com

Unlock 15% savings

Choose how often it's delivered

Skip or cancel any time

Unlock 15% savings

Choose how often it's delivered

Skip or cancel any time

Other Sellers on Amazon

API 5-in-1 Test Strips Freshwater and Saltwater Aquarium Test Strips 25-Count Box

Enhance your purchase

About this item

Special offers and product promotions

Frequently bought together

More items to explore

Product details

Product Description

Important information

Safety Information

Ingredients

From the manufacturer

Testing the Waters

Find Your Ideal Testing Style!

Your API Test Options

Dip and Read

The Scientific Approach

Pick One (or Two)

Making a Better Underwater World

Videos

Videos for this product

API 5-IN-1 TEST STRIPS Freshwater and Saltwater Aquarium Test Strips 25-Count Box.API Tiras de pr...

Videos for related products

Anniple 9 in 1 Aquarium Test Strips for Freshwater Saltwater

Videos for related products

Reviewing the Best Value Aquarium Test Kit: Futura Care 7n1

Videos for related products

Aquarium test strips

Videos for related products

Tetra WaterClarifier 8.4 Ounces, Clears Cloudy aquarium Water, 8.45-Ounce, Model:77136

Videos for related products

Fish Love Futura Care Aquarium Strips, You'll Love Them Too!

Videos for related products

6 in 1 Aquarium Test Strips with Thermometer

Videos for related products

Tetra Water Care 30-30-30

Looking for specific info?

Customer reviews

Reviews with images

Top reviews from the United States

There was a problem filtering reviews right now. Please try again later.

Top reviews from other countries

One-time purchase:

$12.98

FREE delivery: Friday, Feb 10 on orders over $25.00 shipped by Amazon.

Ships from: Amazon.com

Sold by: Amazon.com