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Looks like you still reading each 3rd post only in that thread.Happy reefing to you too.
So I guess we CAN trust refractometers.
Please help me read your results. Where does it indicate that your specific gravity is 1.028-1.029?According to the calculation, looks like I really run my system at 1.028 - 1.029 right? It's showing that refractometers are right and the Apex probe is not?@Randy Holmes-Farley @JimWelsh
He used my spreadsheet to calculate salinity, and inferred a SG from that. The results he posted here show a salinity of 36.61, which translates into a SG of 1.0276 at 25C.Please help me read your results. Where does it indicate that your specific gravity is 1.028-1.029?
No. Seawater that has a salinity of S=35.00 according to the PSS-78 standard actually has about 35.165 g/kg of solutes in it. That conversion factor means that 36.784 / 35.165 * 35.00 = 36.61. The conversion of a salinity into specific gravity is done using the formulas found in The Equation of State of Seawater.So is the s.g. calculated from the cells that contain s(pss78)=36.61 and g/kg = 36.784 ?
I got only positive results in that experiment anyway.![]()