angel likes to rub himself!

[john f]

I think you can find one in Martin Moes Beginner to Breeder Handbook.
I just can't seem to find my copy right now.

I use a refractometer with ATC so I haven't needed the chart in a while.


At any rate, the Tropic Marin glass hydrometer is a good glass model that is calibrated at 77 degrees. Since saltwater becomes less dense at higher temps, a reading of 1.025 at 82 degrees is likely to be lower at 77 degrees. What is your room temp though?
Ususally the hydrometers are calibrated for close to room temp for a reason. If you let the sample sit out for 5 minutes or so it will come down to room temp, which should be 75 degrees or so, so the temperature compensation charts should not be needed.
To find an idea of Salinity ( which is different than sg.) you would still need to convert using a salinty/sg chart. These can be found all over the internet.
Since all of that process is a bit of a hassel, an $80 refractometer does not seem so expensive ( at least to me )



John

 

[reefNewbie]

thanks for all your help john. I think out room temp is actually around 75 usually so i guess if i just let the sample sit out for a bit then that would make it accurate. Now if I could only find one of those graduated cylinders big enough for the hydrometer. I would like to someday just buy a refractometer. Maybe if there is a good powerbuy on one! (hint hint) thanks

 

[anthem]

It does sound like gill flukes as johnf noted earlier. A series of fresh water or formalin dips (every day, or every other day for a minimum of three treatments) will do the trick. It can also be treated with prolonged exposure to hyposalinity.

For hyposalinity, I would seriously recommend a refractometer. The two largest reasons for failure are pH drops and improper measurement of s.g. Swing arm ones are pretty much a guarantee of failure. A large glass hydrometer (lab type of grade) might have a chance, but you're still rolling dice. ..