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Save an extra 20% off your entire order with coupon code: HOLIDAY20
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**May not be combined with any other offer.
Code expires 12/13/13
Instant Ocean Hydrometer is accurate, reliable water test equipment is absolutely vital to creating and sustaining a healthy, successful marine environment. Easy to read and simple to operate, the Instant Ocean Hydrometer delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - and does it each time, every time.
IDEAL FOR USE IN WATER TEMPS OF 68 - 85 F