Find the lowest price for:       All ProductsTest Kits     0.0 (0)   Add a review Elos Aqua Test Kit - General Hardness   ELOS AQUA TEST KIT- GENERAL HARDNESS FreshWaterGeneral Hardness is primarily the concentration of Calcium Ca and Magnesium Mg the two most important metal cations with more than single positive charge. If the amount of... Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched Elos Aqua Test Kit - General Hardness in 150 stores, 2 results found Image Description   Store   Price Elos Aqua Test Kit - General Hardness If this item doesn't belong here, click Remove and help us keep our results accurate.   MarineDepot.com   5 Store Reviews   $16.99 Go to Store Elos Aqua Test Kit - General Hardness If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   1 Store Reviews   $17.84 Go to Store Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Elos Test Kits Other Test Kits internal use: spec400