M
metalhead
Guest
See title.
What temperature is a "CORALIFE DEEP SIX" hydrometer calibrated to.
M
metalhead
Guest
Originally Posted by metweezer
http:///forum/post/2734791
Buy a refractometer. $50.00 is a small price to spend for spot on accuracy
See heres my extreme problem. I live in Canada. And the only place that i know of is big als. And big als sells refractometers for 117$, im 15 and that is a bloody lot of money for me =/. Is there any online store that you know of that ships to canada?
http:///forum/post/2734791
Buy a refractometer. $50.00 is a small price to spend for spot on accuracy
See heres my extreme problem. I live in Canada. And the only place that i know of is big als. And big als sells refractometers for 117$, im 15 and that is a bloody lot of money for me =/. Is there any online store that you know of that ships to canada?
sly
Active Member
https://www.saltwaterfish.com/site_11...ot_parent_id=6
The problem with hydrometers is that they are extremely temperature dependent. It it also almost impossible to eliminate all the micro bubble which cling to the swing arm. Over time salt will build up in the pores of the plastic no matter how well you rinse it. All of these together mean that over time your hydrometer swing arm will float higher and higher as you fill it with water. This means that it will show your SG being higher than it really is. You may think your tank is 1.023 but in reality it might only be 1.017 like it was in my tank one time. I replaced the hydrometer and really discovered how inaccurate it was.
The problem with hydrometers is that they are extremely temperature dependent. It it also almost impossible to eliminate all the micro bubble which cling to the swing arm. Over time salt will build up in the pores of the plastic no matter how well you rinse it. All of these together mean that over time your hydrometer swing arm will float higher and higher as you fill it with water. This means that it will show your SG being higher than it really is. You may think your tank is 1.023 but in reality it might only be 1.017 like it was in my tank one time. I replaced the hydrometer and really discovered how inaccurate it was.
M
metalhead
Guest
Thank you, im looking into getting a refractometer, but I live in Canada, saltwaterfish.com doesn't ship here as far as i know.
M
metalhead
Guest
Also sorry, one more question. If I am to get a refractometer does that mean when i mesure salinity temperature does not effect the result in the same way the hydrometer becomes inaccurate in temperature differances.
stanlalee
Active Member
Originally Posted by reefkprZ
http:///forum/post/2734766
all hydrometers for measuring salt are calibrated at 60 degrees unless otherwise stated on the package.
.
I always thought it was 72deg
(I thought thats what I read when I got mine 10yrs ago but my memory for 10yrs on a single detail could be off).
I'm sure mind is off but I dont care...whatever it is, I mix to the same reading that has worked for me for years (even if it WAS accurate, its probably not 10yrs later). every now and then I'll measure the water that comes from shipped or LFS water and see if they are in the ballpark. I always say I'm going to get a refractometer but that day never seems to come
thing is even if I never step up to a refractometer like I should I like my hydrometer better than ANY current ones available.
http:///forum/post/2734766
all hydrometers for measuring salt are calibrated at 60 degrees unless otherwise stated on the package.
.
I always thought it was 72deg
I'm sure mind is off but I dont care...whatever it is, I mix to the same reading that has worked for me for years (even if it WAS accurate, its probably not 10yrs later). every now and then I'll measure the water that comes from shipped or LFS water and see if they are in the ballpark. I always say I'm going to get a refractometer but that day never seems to come