Find Reviews and Compare Prices for:       All ProductsTest Kits     5.0 (1)   Add a review Sera Carbonate Hardness   Makes it easy to monitor the carbonate hardness in fresh and salt water. Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Sera Carbonate Hardness in 150 stores, 2 results found Image Description   Store   Price SERA KH Carbonate Hardness Test TropicalMarine Aquarium If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   5 Store Reviews   $2.8 Go to Store sera kH Carbonate Hardness Aquarium Water Test 15ml If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   5 Store Reviews   $7.99 Go to Store You can also search these stores   Find this product on Amazon   Amazon.com   2 Store Reviews   Search on Amazon Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Sera Test Kits Other Test Kits internal use: spec552