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Tap water rarely provides the water conditions necessary to maintain an optimal aquarium. Some tap water supplies have very low KH (below 3 odKH) which can contribute to wide pH swings in the aquarium. Also, when water evaporates, it leaves behind hardness ions. Topping off with tap water simply adds more minerals to the aquarium, resulting in a steady increase in GH. It is therefore necessary to test the GH and KH to monitor water quality and prevent stressful conditions
The general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat. The API GH &; KH Test Kit helps you duplicate the natural habitat of your fish to prevent stress, keeping them healthy!
The kit includes 2 bottles of liquid reagent, 2 glass test tubes with snap-tight caps, and step-by-step instructions. We recommend that you take a few minutes each week to monitor your aquarium conditions and create a better underwater world for your fish. Testing your aquarium water has never been so easy or accurate!
5 Star (22)
4 Star (3)
3 Star (1)
2 Star (1)
1 Star (1)
Average Star Rating: 4.6 out of 5
(28 customer reviews)
28 reviews for API GH KH Hardness Test Kit
Rated 5 out of 5
Zenith Lead from Saint Petersburg, Russia
Best investment ever. Quick delivery!
Rated 5 out of 5
Slow Trot from Monterrey, Mexico
Very happy, what is great about it is the warranty!
Rated 5 out of 5
Tight Sight from Katowice, Poland
Great service from Groupspree. Good product.
Rated 5 out of 5
The Dude from Mannheim, Germany
A very polished product, with all the features that I can think of
Rated 5 out of 5
Seven Shots from Austin, United States
Thanks Groupspree for posting fast. Great item very cheap price.
United States of America
Zenith Lead from Saint Petersburg, Russia
Best investment ever. Quick delivery!
Slow Trot from Monterrey, Mexico
Very happy, what is great about it is the warranty!
Tight Sight from Katowice, Poland
Great service from Groupspree. Good product.
The Dude from Mannheim, Germany
A very polished product, with all the features that I can think of
Seven Shots from Austin, United States
Thanks Groupspree for posting fast. Great item very cheap price.