Holy Hydrometer Batman!!
- Thread starter shwstpr88
- Start date
S
shrimpy brains
Guest
Just received hydrometer or refractometer??
mie
Active Member
Um, did you calibrate the refractometer?
If so raise the salinity slowly. Fish, both saltwater and freshwater maintain osmostic balance by adapting to the water surrounding them. Saltwater fish take in a massive amount of water at any given time because their body is constantly trying to disolve and absorb the salt surrounding them. They do this by releasing water through their skin to disolve the salt. Freshwater fish maintain balance by taking in relatively little water. If you put a fw fish in salt it will die by dehydration as it releases all of it's water to try and disolve the salt around it. If you put a sw fish in fresh it drowns because it continues to pull in water, but not expel it through it's skin.
If so raise the salinity slowly. Fish, both saltwater and freshwater maintain osmostic balance by adapting to the water surrounding them. Saltwater fish take in a massive amount of water at any given time because their body is constantly trying to disolve and absorb the salt surrounding them. They do this by releasing water through their skin to disolve the salt. Freshwater fish maintain balance by taking in relatively little water. If you put a fw fish in salt it will die by dehydration as it releases all of it's water to try and disolve the salt around it. If you put a sw fish in fresh it drowns because it continues to pull in water, but not expel it through it's skin.
king_neptune
Active Member
I walked into the kitchen the other day and saw a brand new hydrometer on the counter. I looked over at my dad and commented "Those things have been known to give false readings"
needless to say he was indignant,and scoffed at me. "The guy at the store said this is his most accurate one"
so we tested it out. My refractometer reads .024 his hydrometer reads .029
He didnt believe me so he goes into the LFS the next day. With a sample of his water. They read .024
Came home with a sweet Milawakee refractometer
needless to say he was indignant,and scoffed at me. "The guy at the store said this is his most accurate one"
so we tested it out. My refractometer reads .024 his hydrometer reads .029
He didnt believe me so he goes into the LFS the next day. With a sample of his water. They read .024
Came home with a sweet Milawakee refractometer
srfisher17
Active Member
This has been a gripe of mine for years. A well cleaned hydrometer SHOULD be fairly accurate for years. All it is is a couple pieces of acrylic. But they ain't!
stanlalee
Active Member
Originally Posted by shwstpr88
http:///forum/post/3216490
refractometer sorry! I guess I'm still brainwashed lol. I did check the calibraiton, took straight RO water and it reads 0.000 on the nuts!
use calibration fluid not RO water.
http:///forum/post/3216490
refractometer sorry! I guess I'm still brainwashed lol. I did check the calibraiton, took straight RO water and it reads 0.000 on the nuts!
use calibration fluid not RO water.
J
jstdv8
Guest
I use a floating hydrometer. I should probably go get my water tested to see what the LFS says my SG is at
king_neptune
Active Member
A good refractometer should run around 60-100. worth every penny
veni vidi vici
Active Member
Originally Posted by Jstdv8
http:///forum/post/3216596
I use a floating hydrometer. I should probably go get my water tested to see what the LFS says my SG is at
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
http:///forum/post/3216596
I use a floating hydrometer. I should probably go get my water tested to see what the LFS says my SG is at
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
srfisher17
Active Member
Originally Posted by Veni Vidi Vici
http:///forum/post/3216619
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
The good ones are good. I know a University SW aquaculture lab that prefers them to refractometers. I just can't read the darn things! The pleasures of aging, I guess.
http:///forum/post/3216619
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
bang guy
Moderator
Originally Posted by Veni Vidi Vici
http:///forum/post/3216619
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
Yes, the glass floating hydrometers are very accurate when used properly. The swing-arm hydrometers aren't too bad if you check the accuracy every 6 months.
http:///forum/post/3216619
Floating glass hydrometers a perfectly fine to use for standard use if you know a few things about them.
1. Most are calibrated for 77 deg water temp (You can use a conversion chart to adjust for temps)
2.Test it outside of your aquarium in a separate vessel.
3.Keep the hydrometer clean.
Yes, the glass floating hydrometers are very accurate when used properly. The swing-arm hydrometers aren't too bad if you check the accuracy every 6 months.
J
jstdv8
Guest
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
handbanana
Member
Originally Posted by Jstdv8
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
+1. me too. Exactly. Ive been wondering about mine since I got it. How Accurate it is and propper calibration ect. I just figured it was better than nothing untill I get a refract.
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
+1. me too. Exactly. Ive been wondering about mine since I got it. How Accurate it is and propper calibration ect. I just figured it was better than nothing untill I get a refract.
veni vidi vici
Active Member
Originally Posted by Jstdv8
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
bang guy
Moderator
Originally Posted by Jstdv8
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
IMO the difference will be measurable but not significant.
http:///forum/post/3216819
mine has a thermometer built into it. So, if they are calibrated for 77 degrees and i keep mine at 79, is there going to be much difference? or should I do some sort of conversion?
my LFS guy has a refractometer I guess I'll run over there today and have him test it for me.
IMO the difference will be measurable but not significant.
srfisher17
Active Member
Originally Posted by Bang Guy
http:///forum/post/3216917
IMO the difference will be measurable but not significant.
Worrying about perfection in areas like SG, temp, PH, etc; will drive you nuts. It even ruins the hobby for some folks. When I learned when "close enough" was OK, I sure enjoyed the hobby/addiction a lot more.
http:///forum/post/3216917
IMO the difference will be measurable but not significant.