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oh exualted ones, thank you for your info, thanks bertoni, for the info on the refractometer , I ask my LFS for calibrating solution as I am a medical technoogist, but they just look at me and said just use ro water, thanks for the hookup onsalinty and how to calibrate properly, there is nothing like salt water to get your chemisty /physics juices flowing, well maybe the corals and fish lol, thanks every one, I will calibrate right!!!!!!!!!!!!
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