Find the lowest price for:       All ProductsHydrometers and Refractometers     2.9 (17)   Add a review Coralife Deep Six Hydrometer   Deep Six Hydrometer 1.012 - 1.032 specific gravity by Central Aquatics. Easy and accurate way to test specific gravity Have a question? Ask the Experts! Compare Prices Product Spec Member Reviews Recommend to Friends Edit the spec Category Coralife Something wrong in this page? Let us know! Related products: More Coralife Hydrometers and Refractometers Other Hydrometers and Refractometers internal use: spec453