Salinity needs raised

Tidal Gardens
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czoolander said:
Can we get an actual scientist on here to explain how this works for you guys because this is kinda sad how you think that using RODI water to set your reading and calibration to 0.00 will not give you the most accurate reading for when you test your tank water for salinity .

When you set your scale to weigh yourself do you calibrate the scale to 100lbs or 200lbs . No you calibrate to 0lbs . Then you put on the scale what you want to weigh

Measuring salinity would be the same . Set your scale to zero. Test your sample
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Randy Holmes-Farley is the author for that paper that was posted and how to calibrate a refractometer. He is on here all the time. This is not enough evidence for you, good luck and happy reefing!
 
Top Shelf Aquatics
So I had my water tested at the LFS from an experienced 40+ year reefer. He tested my magnesium and calcium . Another reefer in the store who works at the local aquarium tested my salinity and ALK.

Results from these two . same results i tested at home 2 days later .

I think i will go with the experience of two real life reefers that i see with my own eyes the results they produce . with over 60+ years of reefing experience between the two of them .

My salinity is 1.025 you can make jokes and say im wrong and this and that but it is what it is.
 
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Dburr1014 said:
Eh, he's admitted he's new to reefing and doesn't want help. We tried.
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Y'all, please remember that the person causing the discord is not the OP.
Let's try to get this thread back on track :)
 
Orphek OR3 reef aquarium LED bar
czoolander said:
There is a reason my marine biologist friend said " do not take advice from this site " and i said no no R2R is good there is lots of good advice on here. LOL wow was i wrong you guys cant even calibrate a refractometer properly basic stuff. Watch a couple educational videos and see that you calibrate to 0.00 everything on the internet , youtube , google , books , the company itself says to use distilled water and calibrate to 0.00 . SO i really could care less what a couple fat internet trolls say on a forum .
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I guess you should have asked a chemist about a chemical tool like a refractometer, not a biologist. I don’t usually ask my dentist about my sore knee.

The simple and indisputable fact is that many (not all) refractometers used by reefers are made for measuring brine (NaCl solutions), not seawater. If those are perfectly made and perfectly calibrated with RO/di, they must be slightly off when measuring seawater salinity.

The other fact is that ANY refractometer, whether perfectly made or not, will properly read 35 ppt seawater when calibrated with an accurate 35 ppt standard.

which would you rather do? Use a standard like ro/di that has a good chance of leading to inaccurate results, or use a high quality 35 ppt standard that does not have such a risk?
 
The Big Al’s video uses RODI water to calibrate the refractometer to 0. Then proceeds to say the process is not complete and uses calibration solution to hone it in to 35. Not sure if everyone watched it all the way thru.
 
Deltec
Folks, civility please!!!! Debate is just fine, and that's been left for now. But let's use civility in our debate and not use insults. Insults have been removed.
 
If the OP did not know these are some of the credentials about the author of the articles that were posted

Randy Holmes-Farley has a BA in chemistry and biology from Cornell University (1982) and a PhD in chemistry from Harvard University (1986). He has 57 patents, numerous publications and several awards in a variety of chemical fields.

If you ever have any reef related chemistry threads post your question in the Chemistry forum or google your topic and add Randy Holmes Farley and most likely an article will come up that you can learn more then you expected to.
 
KStatefan said:
If the OP did not know these are some of the credentials about the author of the articles that were posted

Randy Holmes-Farley has a BA in chemistry and biology from Cornell University (1982) and a PhD in chemistry from Harvard University (1986). He has 57 patents, numerous publications and several awards in a variety of chemical fields.

If you ever have any reef related chemistry threads post your question in the Chemistry forum or google your topic and add Randy Holmes Farley and most likely an article will come up that you can learn more then you expected to.
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***The OP is NOT the one questioning how to calibrate, etc.
 
BRS
Pale Morning1 said:
The Big Al’s video uses RODI water to calibrate the refractometer to 0. Then proceeds to say the process is not complete and uses calibration solution to hone it in to 35. Not sure if everyone watched it all the way thru.
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That doesn’t really make sense to me. Calibration of a refractometer is not a two step process. :)
 
Randy Holmes-Farley said:
That doesn’t really make sense to me. Calibration of a refractometer is not a two step process. :)
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I was just making the point that even the video poster used to support calibration with water actually uses calibration fluid. I use a digital tester. I am lazy. Lol
 
Deltec
Pale Morning1 said:
I was just making the point that even the video poster used to support calibration with water actually uses calibration fluid. I use a digital tester. I am lazy. Lol
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OK, thanks. :)
 
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IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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    Votes: 3 4.3%
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