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API TEST KIT Individual Aquarium Water Test Kit
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- Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution, 1 color card and 2 glass test tubes with cap
- Helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish loss
- Accurately measures GH & KH in freshwater aquariums
- Water hardness is a measure of the dissolved mineral content of water and should match fish natural habitat to prevent fish stress and keep them healthy
- Use for weekly monitoring and when water or fish problems appear
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From the manufacturer
It’s Smart To Be Proactive!
The best way to keep your aquarium clean is to maintain good water quality. This will keep your fish strong and vibrant, as well as preventing disease.
How Do I Maintain A Healthy Environment?
It is important to test your aquarium water weekly to verify good quality in addition to a bi-weekly partial water change of no more than 25% to help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to fish.
How Do I Take Good Care Of My Aquarium & Fish?
- Feed & observe fish daily
- Test water quality weekly
- Change 25% water bi-weekly
- Restore your ecosystem monthly
Feed Your Fish Daily
Feed your fish twice daily with API Fish Food which contains nutritionally enhanced proteins, allowing for easy uptake of nutrients and maximum absorption, resulting in less excrement for clear, clean water. Only give the amount of food fish can eat in 2 to 3 minutes depending on the species. Some fish such as bottom feeders and algae eaters will need up to 30 minutes to 2 hours. Take time to observe fish and the water temperature to ensure they are active & healthy.
Feed Fish Daily
Test Water Quality Weekly
Change 25% Water Every 2 Weeks
Restore Your Ecosystem Monthly
|API Master Test Kit||API Stress Zyme||API Algaefix||API Stress Coat||API Quick Start||Melafix|
|Use Weekly||Helps monitor water quality||Keeps aquarium & gravel clean||Keeps aquarium & gravel clean|
|Use Every 2 Weeks||Makes tap water safe when changing water||Restores the ecosystem to help prevent fish stress|
|Use Monthly||Restores the ecosystem to help prevent fish stress|
|Use When Adding New Fish||Prevents disease breakout|
Making A Better Underwater World
At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For over 50 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.
Keep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy-to-use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Water hardness is a measure of the dissolved mineral content of water. There are two types: the general hardness (GH) and carbonate hardness (KH). When keeping freshwater fish and plants, the GH and the KH of aquarium water should match their natural habitat. The API GH & KH TEST KIT helps aquarists duplicate the natural habitat of their fish, as well as detect low KH levels, which can lead to rapid and wide pH shifts, stressing fish. API GH & KH TEST KIT contains KH test bottle, GH test bottle, instructions with color card, and two capped glass test tubes. 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.
Style: GH & KH
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|Sold By||Amazon.com||Amazon.com||Amazon.com||ZANY Values||Amazon.com||Amazon.com|
|Item Dimensions||2.75 x 1.62 x 5.12 in||3.5 x 1.75 x 6.5 in||4 x 1.5 x 6 in||4 x 2 x 4 in||7 x 5.5 x 6.5 in||7 x 5.75 x 4.75 in|
Top customer reviews
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I know some have said the colors are hard to distinguish. I didn't find that to be true. The colors are pretty light, but as long as the tube is up against a white background it is pretty clear if the GH one is pale green or pale orange, or the KH one is blue or yellow. If you are mildly colorblind this might be rather hard.
Being a titration test, you basically add one drop, shake it, and look at the color. Repeat until it changes, counting drops. This is fine for me, but if you have very high hardness it might take a while to run the test. My tap is 7dGH and 5dKH, and I raise the GH to 10. 10 drops doesn't take too terribly long.
Here's the thing though: a few years ago the freshwater color card (used to read the NO3 level) went from having 7 clear colors to choose from to having a muddled mess. At the low end of the range (where you would want your water to be), the colors are clear and decipherable. At the middle part of the range (where I tend to find things a bit too often), the colors start to look the same. Maybe it's just my eyes. I can see subtle variation between 10ppm and 20ppm and between 40ppm and 80ppm, but it's not enough to tell the difference when actually performing a measurement. Instead, I just split the difference and go with a generic "orange" is 15ppm and "red" is 60ppm. I can still pick out an intermediate "red/orange" that's around 30ppm, but I'd appreciate having a real color card capable of full resolution.
After 2 weeks of 0-.25 readings without fluctuation, I wondered if the tests were even accurate. I decided to test 5ml of pure ammonia instead. Imagine my disappointment when the pure ammonia sample turned the same yellow (0%). Before you go sending hate mail to API, there's a good reason for this. It turns out, the ammonia level was too high and essentially "blew out" the testing liquid. API is assuming your fish isn't living in pure ammonia and, therefore, didn't make this kit to test levels that high.
Next, I tested 5ml of water from a 1 gallon jug filled with tap water and 1 drop of pure ammonia. Yes, I apparently have too much time on my hands and a latent mad scientist gene. This test proved accurate. The tube turned dark green almost instantly (picture attached). I feel much more secure using and believing this test now.
This works well and I'm glad to add it to my tool kit.
Some pet stores don't normally stock test kits for Carbonate Hardness, but it is a very important parameter of water quality. Even for fish species that are not particular about water hardness, having enough Carbonate in a tank's water is a major help in preventing the water from becoming to acidic. As debris collects in the sand or gravel of a tank, its decay can cause the water to become more acidic over time. Carbonate not only lowers acidity of the water, but more importantly it acts as a buffer that helps to stabilize the PH of the water. Even fish and plants that can tolerate different acidity levels, are very sensitive to rapid shifts in the PH of the water. Rapid shifts in water parameters are almost always bad for fish and plants. The only exception might be that if your fish are gasping at the top for oxygen, getting more oxygen into the water quickly with aeration and surface turbulence is never too fast.
If the ammonia levels in a tank rise, this can also make the water more acidic. The more acidic the water becomes, the more toxic to the fish the ammonia becomes as well. Many things can cause shifts in the PH of the water, and Carbonate helps prevent slow and prevent these shifts that can kill fish and plants.
The Carbonate Hardness doesn't normally need to be checked as often as other water parameters. I normally check mine about once per month, so this test kit will last me for a long time even with several fish tanks.