If You Use a Swingarm Hydrometer.... BURN IT NOW!

[Ucyibd1]

Pinpoint salinity monitor! Got one when I first got into saltwater.....love it.

[bebangs]

are you 100% sure your refractometer is 100% accurate?

[TankednTN]

Originally Posted by Ichabod

Here's my newbie error story:
in trying to calibrate the refractometer, I followed the instructions that came on the bottle of fluid (I got the bulk reef supply door buster one), and found the screw very difficult to turn. It seemed all the way down. I did a quick search on here and found a discussion which concluded someone had a faulty unit when he couldn't adjust the screw down far enough. I tried a couple more times, and then thought I'd just try tank water for fun. As I got the little pipette (maybe?) out of the case I found a little blue screwdriver and suddenly it all made sense - I'm supposed to take off the rubber cap and use the screwdriver on the tiny screw, not try to turn the entire knurled button. . .

Anyway, then it was really easy to calibrate and really easy to use.

That's funny because I bought the same one and did the same thing with the screw. I have an old Hydrometer that someone else had before me and it doesn't read close to what the Refractometer reads. I'm chalking mine up to being old and needing to be replaced. It was off my about the same amount as the ops was.

[joe_himself]

my hydrometer seems to be pretty close to my refrac..