![6311 - Tropic Marin Calcium/Magnesium Professional Test Kit - Freshwater/Saltwater - Tropic Marin Calcium/Magnesium Professional Test Kit - Saltwater/ Freshwater | TMC 6311 - Tropic Marin Calcium/Magnesium Professional Test Kit - Freshwater/Saltwater - Tropic Marin Calcium/Magnesium Professional Test Kit - Saltwater/ Freshwater | TMC](https://www.tropicalmarinecentre.com/sites/default/files/styles/product_detail_flex/public/repository/content/drygood/6311/images/6311.jpeg?itok=nYJSoOPn)
6311 - Tropic Marin Calcium/Magnesium Professional Test Kit - Freshwater/Saltwater - Tropic Marin Calcium/Magnesium Professional Test Kit - Saltwater/ Freshwater | TMC
![API calcium test kit from freshwater shrimp tank. How dark blue should the test be to get your final reading? It never tells you? Mine turns straight blue at the first drop API calcium test kit from freshwater shrimp tank. How dark blue should the test be to get your final reading? It never tells you? Mine turns straight blue at the first drop](https://preview.redd.it/qehidv4uavc41.jpg?width=640&crop=smart&auto=webp&s=205ef27ec35110602fcab26f0525199255b38860)
API calcium test kit from freshwater shrimp tank. How dark blue should the test be to get your final reading? It never tells you? Mine turns straight blue at the first drop
![Amazon.com : Fluval Calcium Test Kit for Aquarium Water, Freshwater & Saltwater Fish Tank Test : Pet Supplies Amazon.com : Fluval Calcium Test Kit for Aquarium Water, Freshwater & Saltwater Fish Tank Test : Pet Supplies](https://m.media-amazon.com/images/I/51rlji8Qs2S._AC_UF1000,1000_QL80_.jpg)