hydrometer

SkeletalUnion

New member
Im aware there less accurate but could use some help. Set up aquarium last night, tried measuring sp using hydrometer but its reading zero what am i doing wrong?
 
Yeah set it up witb dry rock added salt, turned on powerhead heater filters etc primed hyrdometer with saltwater prior and nothing unless ita busted or im stupid.
 
Maybe try jiggling the arm on the hydrometer to see if it is simply stuck. I 2nd the advice to get a refractometer. Yes, they cost more up front, but will save you in the long run, especially when you have living things in your tank.
 
If you do get a refractometer just make sure you use it correctly. People seem to think that once they get one of these things they're golden, but this isn't the case unfortunately. There are plenty of false readings out there due to human error.

What kind of hydrometer are you using btw? Those floating glass hydrometers have been known to be very accurate.
 
Hydrometers all have some error rate, but that error rate never changes. So take your hydrometer to somebody you trust with a good refractometer and calibration fluid. Have them calibrate their refractometer and then test their saltwater. Say it comes up 1.026, OK.

Now test the water with your hydrometer and lets say it comes up 1.024, OK.

Now put a label on your hydrometer that says "ADD 0.002". Now your hydrometer is calibrated as well and it will not change over time. I have 2 and for more than 6 years now they have had the exact same error rate every year when I test them against my refractometer (which is just a pain to use).
 
Hydrometers all have some error rate, but that error rate never changes. So take your hydrometer to somebody you trust with a good refractometer and calibration fluid. Have them calibrate their refractometer and then test their saltwater. Say it comes up 1.026, OK.

Now test the water with your hydrometer and lets say it comes up 1.024, OK.

Now put a label on your hydrometer that says "ADD 0.002". Now your hydrometer is calibrated as well and it will not change over time. I have 2 and for more than 6 years now they have had the exact same error rate every year when I test them against my refractometer (which is just a pain to use).

What Ron said. I have a pair of hydrometers dating to the mid 1980's. One reads .01 high, the other .02 low. Neither has changed.

I do fine it easier to use a refractometer however.


How much salt mix did you add to how many gallons of water? ALso what brand of salt mix are you using

And ^^^What he asked^^^
 
I got my refractometer online for like $25. Not really a huge amount of money considering the hobby. I'm a total penny pincher but I think splurging on the refractometer was worth it.
 
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