Refractometer calibration solution

[Myka]

Originally Posted by crimper

No need to buy those dropper from Amazon or ebay, if you had used those little "Blue Bottles" from Zeovit as they have droppers. I have used them in making my own calibration fluid. It will last a life time

Not that kind of dropper. A sealed one, like eye drops. An open dropper is prone to evaporation and contamination.

Originally Posted by Frogger

Do not use the Sybon Standard Seawater Saline because it is almost 4ppT off.

I have found the same thing even though it is NIST-certified!! I like the dropper bottle it is sealed in though. It reads the same when it's 6 years old.

[hunggi74]

salinity is the most important and easiest parameter to maintain in this hobby. It dictates the starting point of all the elements in your tank. I use a Sybon refractometer and calibrate before I test any new salt water or the water in my tank. Doesn't take that much time but the results can be disastrous if you've got more sensitive corals and are using a unit that isn't calibrated properly

[Zoaelite]

HOKKAYYYYYY.
So I went and dropped $25 at Picies to get the Two Little Fishies calibration fluid. Who would of thought a 250mL bottle of saltwater... the most plentiful liquid on the planet... would cost $100.00/L...

Talk about profit margin...

Whining about price aside, my salinity which I thought sat at 1.026 has been more around the 1.022 point... for however long.

Now I have had really good success with most everything in my tank, so take this info with a grain of salt (). I will certainly be slowly raising my salinity but I think this is a strong testament to the power of keeping things stable in the tank.