The Hanna Instruments Marine Checker Handheld Colorimeters produce accurate digital readouts for your aquarium's alkalinity, calcium, nitrite & phosphorus.
Proper alkalinity is vital for coral calcification & skeletal formation; prevents pH swings, coral bleaching, & tissue loss; and improves equipment performance.
Here's our first top 10 list of trending products for 2015. From Bluetooth electrodes to smartphone apps, find out which products scored big in 2015.
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