Refractometer help...
- Thread starter gregghia
- Start date
tx reef
Active Member
Most have ATC.
Most of the refractometers sold in the hobby are called salt/brine refractometers. These are perfectly fine for the hobbiest. I would recommend buying calibration fluid to calibrate it rather than using distilled water. This will decrease the margin of error greatly.
If you want to shell out some extra cash, then you can buy a refractometer made specifically for seawater.
I would go with the one on this site. It is a good price and works just as good as any other salt/brine refractometer.
Most of the refractometers sold in the hobby are called salt/brine refractometers. These are perfectly fine for the hobbiest. I would recommend buying calibration fluid to calibrate it rather than using distilled water. This will decrease the margin of error greatly.
If you want to shell out some extra cash, then you can buy a refractometer made specifically for seawater.
I would go with the one on this site. It is a good price and works just as good as any other salt/brine refractometer.
gregghia
Member
Originally Posted by PrevWon
How do you calibrate it? (I have the one from this site)
Really easy... use distilled water or some of your RO/DI. Just place the drops on the lens and close the cover... the white/blue line should be at ZERO ALL THE WAY AT THE BOTTOM. If not just turn the screw until it is. Just wipe clean and test your salt water.
IRONICALLY the first test I did on my aquarium showed I was at 1.025 PERFECT for me. But when I dunked my Deep Six back in it should 1.021. LARGE variance. So the Deep six was off but I am consistently off for the last 5 months. So I just marked on the deep six where I need it to be although its inaccurate and should be fine but the cheap hydrometer was off.
How do you calibrate it? (I have the one from this site)
Really easy... use distilled water or some of your RO/DI. Just place the drops on the lens and close the cover... the white/blue line should be at ZERO ALL THE WAY AT THE BOTTOM. If not just turn the screw until it is. Just wipe clean and test your salt water.
IRONICALLY the first test I did on my aquarium showed I was at 1.025 PERFECT for me. But when I dunked my Deep Six back in it should 1.021. LARGE variance. So the Deep six was off but I am consistently off for the last 5 months. So I just marked on the deep six where I need it to be although its inaccurate and should be fine but the cheap hydrometer was off.