Originally Posted by
stdreb27
http:///forum/post/3238916
I bought the cheapest one they had. Which was 40. It has a calibration nut which I like better than having to get out a screw driver.
It was this one,
https://www.saltwaterfish.com/Refractometer_p_135.html. And now that I think about it, it was on sale at the time, or I had a coupon or something...
Oh and don't worry about buying the calibration solution, RO/DI water will be fine. In reality I've tried to see if I got a reading out of tap. And I couldn't tell a difference.
This is the one I bought about 6 years ago, and I have been in an aquarium hiatus for the last 5 years. I am setting up again and pulled out the ol' refractometer, but cannot find the directions. Would you have a copy you could scan and email me with. Much appreciated.