Find the lowest price for:       All ProductsTest Kits     5.0 (2)   Add a review Aquarium Pharmaceuticals GH & KH Test Kit   Aquarium Pharmaceuticals Test Kit GH/KH by Aquarium Pharmaceuticals API. Tests tap water and freshwater aquariums for general hardness GH and carbonate hardness KH Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched Aquarium Pharmaceuticals GH & KH Test Kit in 150 stores, 26 results found Image Description   Store   Price GH and KH Hardness Test Kit for Freshwater If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $5.25 Go to Store Aquarium Pharmaceuticals Fresh Hard/Carbon Test Lab If this item doesn't belong here, click Remove and help us keep our results accurate.   Big Al's Online   0 Store Reviews   $5.29 Go to Store API GH/KH Freshwater Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $5.83 Go to Store API GH/KH Freshwater Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   Aloha Aquariums   0 Store Reviews   $5.83 Go to Store API Freshwater GH/KH Hardness Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $5.99 Go to Store Gh & Kh Test Kit Fresh General & Carbonate Hardness If this item doesn't belong here, click Remove and help us keep our results accurate.   StrictlyPetSupplies.com   0 Store Reviews   $6.16 Go to Store GH and KH Hardness Test Kit for Freshwater If this item doesn't belong here, click Remove and help us keep our results accurate.   That Fish Place That Pet Place   3 Store Reviews   $6.39 Go to Store Aquarium-Pharmaceuticals GH & KH Test Kit [For Freshwater use only] If this item doesn't belong here, click Remove and help us keep our results accurate.   Mail Order Pet   0 Store Reviews   $6.44 Go to Store AP TEST KIT GH/KH HARDNESS If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $6.45 Go to Store Test Kit Gh/Kh Hardness - Aquarium Pharmaceuticals If this item doesn't belong here, click Remove and help us keep our results accurate.   PetBlvd.com   0 Store Reviews   $6.47 Go to Store Aquarium Pharmaceuticals API Aquarium Pharmaceuticals Test Kit GH/KH If this item doesn't belong here, click Remove and help us keep our results accurate.   Drs. Foster and Smith   7 Store Reviews   $6.49 Go to Store Freshwater GH and KH Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $6.5 Go to Store Freshwater Hardness Aquarium Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   Aubuchon Hardware   0 Store Reviews   $6.69 Go to Store Aquarium Pharmaceuticals Aquarian Freshwater GH & KH Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   MarineDepot.com   5 Store Reviews   $6.79 Go to Store Freshwater Hardness GH & KH Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   GregRobert Pet Supplies   0 Store Reviews   $6.91 Go to Store API TEST KIT- GH & KH If this item doesn't belong here, click Remove and help us keep our results accurate.   Aquarium Center   0 Store Reviews   $7.99 Go to Store AP TEST KIT GH/KH HARDNESS If this item doesn't belong here, click Remove and help us keep our results accurate.   Peticious.com   6 Store Reviews   $8.51 Go to Store Freshwater GH and KH Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   pawsuppetsupply.com   0 Store Reviews   $8.64 Go to Store AQUARIUM PHARMACEUTICALS - FRESHWATER GH & KH (HARDNESS) TEST KIT If this item doesn't belong here, click Remove and help us keep our results accurate.   Aquarium Garden   0 Store Reviews   $8.82 Go to Store API - GH & KH Test Kit Freshwater If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $8.95 Go to Store GH & KH Aquarium Carbonate Hardness Test Kit API If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $9.95 Go to Store API GH & KH Test Kit NEW FREE Shipping If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $10.79 Go to Store Aquarium Pharmaceuticals Test Kit Gh/Kh Hardness If this item doesn't belong here, click Remove and help us keep our results accurate.   SHOP.COM   0 Store Reviews   $11.02 Go to Store NEW Aquarium Pharmaceuticals Test Kit Gh/Kh Hardness If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $11.02 Go to Store Freshwater Gh & Kh (hardness) Test Kit If this item doesn't belong here, click Remove and help us keep our results accurate.   AllPetMall.com   0 Store Reviews   $12.87 Go to Store API 5 in 1 Test Strips Aquarium Kit pH NO2 NO3 KH GH If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   3 Store Reviews   $14.99 Go to Store Are we missing a store? 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