Find Reviews and Compare Prices for:       All ProductsCO2 Products     0.0 (0)   Add a review Red Sea CO2 Indicator   Hydrometer with Liquid Crystal Thermometer 1.010 to 1.030 specific gravity and 64-97 F by Red Sea. Versatile swing-arm hydrometer accurately measures both specific gravity and water temperature. Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Red Sea CO2 Indicator in 150 stores, 5 results found Image Description   Store   Price Red Sea Co2 Indicator If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   5 Store Reviews   $6 Go to Store Hydrometer with Temperature Indicator If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $6.99 Go to Store Fish & Aquatic Supplies Red Sea Hydrometer With Digital Thermometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $8.89 Go to Store Hydrometer with Temperature Indicator If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $37.18 (used) Go to Store Fish & Aquatic Supplies Red Sea Hydrometer With Digital Thermometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $42.52 (used) Go to Store Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Red Sea CO2 Products Other CO2 Products internal use: spec438