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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
Brownie from Tijuana, Mexico
Well designed and built, received within 2 weeks
Rated 5 out of 5
InTwoPieces from Knoxville, United States
I started using this product a bit sceptical but it worked out well
Rated 4 out of 5
Pink Page from Surgut, Russia
Even better than I could have hoped for
Rated 4 out of 5
AnonymousFriend from Karlsruhe, Germany
I have had this product now a couple of weeks. It is quality and has great features.
Rated 4 out of 5
Frustrated Monk from Cape Town, South Africa
This product was what I exactly expected it to be. Would definitely recommend this product to others with confidence.
United States of America
Brownie from Tijuana, Mexico
Well designed and built, received within 2 weeks
InTwoPieces from Knoxville, United States
I started using this product a bit sceptical but it worked out well
Pink Page from Surgut, Russia
Even better than I could have hoped for
AnonymousFriend from Karlsruhe, Germany
I have had this product now a couple of weeks. It is quality and has great features.
Frustrated Monk from Cape Town, South Africa
This product was what I exactly expected it to be. Would definitely recommend this product to others with confidence.