Free Shipping @ $70

Zoom the image with the mouse

Sold Out

API GH & KH Test Kit Combo

$ 9.99

This is a liquid test kit for KH. KH helps prevent PH from going up or down which helps maintain a healthy ecosystem in your aquarium. 

GH is for measuring how many hardness minerals are in your water. All fish want some minerals but things like Guppies, Mollies, Platies, Swordtails, Goldfish, African Cichlids and more like lots of minerals which is easiest to test for by using a GH test kit.

Directions:

For Testing KH

1. Rinse a clean test tube with water to be tested.

2. Fill the test tube with 5 ml of water to be tested (to the line on the tube).

3. Holding the bottle vertically, add KH Test Solution, one drop at a time. Be sure to count the number of drops being added.

4. Cap the test tube and invert several times after each drop.

5. The test is completed when the water in the test tube, after having been shaken, turns from blue to yellow. If you have difficulty discerning the color after the first drop of test solution is added, remove the cap from the test tube and, while holding it over a white background, look down through the tube.

6. The KH value is determined by the number of drops of test solution that must be added to turn the water in the test tube bright yellow.

For Testing GH

1. Rinse a clean test tube with water to be tested.

2. Fill the test tube with 5 ml of water to be tested (to the line on the tube).

3. Holding the bottle vertically, add GH Test Solution, one drop at a time. Be sure to count the number of drops being added.

4. Cap the test tube and invert several times after each drop.

5. The test is completed when the water in the test tube, after having been shaken, turns from orange to green. If you have difficulty discerning the color after the first drop of test solution is added, remove the cap from the test tube and, while holding it over a white background, look down through the tube.

6. The GH value is determined by the number of drops of reagent that must be added to turn the water in the test tube green.

Shipping Rates
Flat rate shipping on order under $70 of $4.99
FREE Shipping over $70.

To view our shipping map and estimated delivery times click here.

Live Arrival Guarantee
We guarantee our live products will arrive alive. We ask that you do your part and minimize the amount of time our packages sit out in the elements. It can also be a good idea to avoid ordering live items during extreme temperatures. This would be when night time temps are below 35 and over 80 degrees during the day. Now these temps are not for sure death, it's just what makes it easiest for all of us during shipping.

When temperatures are cold we will use heat packs and extreme cold styrofoam liners. Shipping live goods is difficult as our warehouse could be 70 degrees and your home could be snowing, and all the stops in between. We do our best and will make it right for you and may request to try again at a different time.  During heat waves, it's best to avoid ordering live goods as ice packs etc don't do enough to mitigate it. 

30 Day Return Policy
Our goal is to provide a fair way to satisfy our customers and not lose money while doing it. We make every effort to fully disclose how our products work and what is to be expected. A damaged product during shipping is an automatic replacement from us. When it comes to a difference of opinion such as: "My fish doesn’t like this food." That we don’t refund for. However, if you decide the light you bought is a bit too green for your liking, provided it is in the original box, within 30 days and purchased from us, we will refund it at your cost of shipping.

If you would like to return a product, start the process by emailing us at shipping@aquariumcoop.com This allows us to see if there is something we can do before returning the product such as a feature you didn’t know about or send you a return label. We don’t require an RMA number, but do ask you to contact us to initiate the return. Please do not call the retail store as they operate separately from the warehouse and will not be able to issue you a return label etc.

To read our full return policy click here

 

Customer Reviews

Based on 5 reviews
100%
(5)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
J.B.
GH & KH

I did my test and I'm still confused. I have a 29 gallon Aquarium with Platies, Guppies, Mollies, 2 ghost shrimp, 2 Corey cats and 1 Pleco. I have hard City water KH 6 drops = 107.4
GH 10 drops = 179
So how do I fix it and what number am I supposed to have with my tank. My other stuff such as Nitrites and ammonia are normal but I'm not sure on my Nitrates yet eating on getting the API Freshwater test kit getting it on Friday. Just need some help????????

Z
Z.T.
A Great Tool to Test Water Hardness

I have many aquariums, ranging from full high tech planted tanks, to reef tanks, brackish tanks and African cichlid tanks. This test kit is a great way for me to measure the hardness of the water in each tank so that I may ensure that they have the best water conditions for the inhabitants.

This is an easy-to-use test kit. Make sure that you READ THE INSTRUCTIONS, and that you DO NOT THROW AWAY THE INSTRUCTIONS. Having the instructions available at all times will ensure that you are using the test kit properly.

r
r.
Do You Know Your Water Parameters?

My fish tanks are "visually" well maintained i.e. heavily planted, frequent water changes, etc. But certain fish species never seemed to do well in my tanks. So, I got this kit to get a better understanding of the water chemistry in my area...continually trying to learn more about the hobby.

T
T.V.
Works as advertised

I bought this kit to get a better sense of my water structure since I recently moved to a new state. These tests and quick and seem accurate when compared to my local water report.

S
S.
Great kit

Always buy these kits here great price and come very well packed

Customer Reviews

Based on 5 reviews
100%
(5)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
J.B.
GH & KH

I did my test and I'm still confused. I have a 29 gallon Aquarium with Platies, Guppies, Mollies, 2 ghost shrimp, 2 Corey cats and 1 Pleco. I have hard City water KH 6 drops = 107.4
GH 10 drops = 179
So how do I fix it and what number am I supposed to have with my tank. My other stuff such as Nitrites and ammonia are normal but I'm not sure on my Nitrates yet eating on getting the API Freshwater test kit getting it on Friday. Just need some help????????

Z
Z.T.
A Great Tool to Test Water Hardness

I have many aquariums, ranging from full high tech planted tanks, to reef tanks, brackish tanks and African cichlid tanks. This test kit is a great way for me to measure the hardness of the water in each tank so that I may ensure that they have the best water conditions for the inhabitants.

This is an easy-to-use test kit. Make sure that you READ THE INSTRUCTIONS, and that you DO NOT THROW AWAY THE INSTRUCTIONS. Having the instructions available at all times will ensure that you are using the test kit properly.

r
r.
Do You Know Your Water Parameters?

My fish tanks are "visually" well maintained i.e. heavily planted, frequent water changes, etc. But certain fish species never seemed to do well in my tanks. So, I got this kit to get a better understanding of the water chemistry in my area...continually trying to learn more about the hobby.

T
T.V.
Works as advertised

I bought this kit to get a better sense of my water structure since I recently moved to a new state. These tests and quick and seem accurate when compared to my local water report.

S
S.
Great kit

Always buy these kits here great price and come very well packed