what is good for the refractometer, an aquarium of 70 gallons of salt water?
This is the best low-cost refractometer. It is 7 dollors more than a refractometer, are commonly found others, but worth it. http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=REFRACT-HD&Category_Code =
Ganzel’s Reef Tank – 130 g. – 70 g. sump – July 2009 – saltwater aquarium HD
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Extech RF20 0 Parts per Thousand to 100 Parts per Thousand Automatic Temperature Compensation Salinity Refractometer $63.99 Salinity refractometer measures the concentration of dissolved salt in water — Includes: (1) Carrying Case; (1) Calibration screwdriver… |
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Hanna Instruments HI 96822 Refractometer for Measuring Salinity of Natural and Artificial Seawater $176.67 ###############################################################################################################################################################################################################################################################… |
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Sybon Refractometer with Automatic Temperature Compensation $49.99 For the most precise measurement of salinity, the experts use a Refractometer. This high-tech instrument is used to measure salinity when perfect conditions are needed for breeding, or keeping very delicate corals. This easy-to-use and read device will allow you to keep track of your tank’s salinity fluctuations. This instrument also features ATC, automatic temperature compensation that will allow… |
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Extech RF12 Portable Brix Refractometer (0 to 18%) with Automatic Temperature Compensation $99.99 Extech RF12 Portable Brix Refractometer (0 to 18%) with ATC… |
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Extech RF41 Portable Battery Coolant/Glycol Refractometer with Automatic Temperature Compensation (°C) $79.99 Extech RF41 Portable Battery Coolant/Glycol Refractometer with ATC (?C) Measures the freezing point of coolants and concentration of Ethylene/Propylene Glycol… |
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Extech RF11 Portable Sucrose Brix Refractometer (0 to 10%) with Automatic Temperature Compensation $89.99 Extech RF11 Portable Sucrose Brix Refractometer (0 to 10%) with ATC… |
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