Hi all I have a question. I noticed my salinity was high in my last ICP test so I wanted to make sure my method of checking was accurate. I use a Hanna salinity checker. I calibrate it often and it shows my water at 35 ppt. I check using a refractometer correctly calibrated using a brand new bottle of Brightwell calibration solution and my salinity shows a little over 37.... what do I go by? And, is this a reason my corals have looked annoyed. Thanks.
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