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Quote: The end result of your hygrometer in the bag with the salt water left for 12 hours should read 75%... If it reads 65% then you know your hygrometer is reading 10% low. If it reads 85% then it is reading 10% high... Then just do the math each time you are reading your hygro in your bator...

OK so I calibrated my hygrometer last night and was wondering if it is normal to read 9% off??? It reads 66% after 12 hours... Here's how I did it. Please let me know if I did it correctly. I got a large ziplock baggy and placed a bowl of salt water 1/2c salt 1/4c water in the bowl and put the...