What is your Specific Gravity

[jcgardner]

refractometer

1.025

79-80

 

[redsea reefer]

refractometer

1.025

80F

 

[Clownfish518]

refractometer

1.025

76-78 degrees

 

[tektite]

Refractometer

1.026

78F

 

[r2d2]

Refractometer

1.025

Temp summer 80-81
temp winter 77-78

 

[Frankie]

I answered this in another thread, I recommend not deviating away from a salinity of 35 ppt (specific gravity = 1.0264; conductivity = 53 mS/cm). The ocean does not fluctuate as some people tend to think. The salinity is different in some places but a sudden shift would most likely end in destruction for marine life on a broad scale. The success of a reef aquarium is greatly dependent on the SG>

 

[Boomer]

You are correct Frank, there are no sudden shifts. Most are slow seasonally shifts and usually not more than 1 ppt. The only places with sudden shifts are off the mouths of rivers. In any tank we ask try not to create a shift of any more than 1 ppt / day. This can be easily seen in shrimp, where the salinity is off when moved to another tank, they go right into molt.

 

[Cloudburst2000]

My SG is 1.025 and my temp is 78F. I currently use a hydrometer, but I asked Santa for a refractometer so we shall see

 

[Edison]

1023 right now but am shooting for 1025-1026. Bringing it up by .001 every week.

Temp is 79F and I use a refractometer.

 

[bwhit1406]

1.025 78 degrees refractometer.

 

[carmexx]

35ppt using a Refractometer. 78.5 degrees F.

 

[fishhead]

1.024. Sybon

 

[David Shaw]

Temp 80

1.024 - Refractometer

 

[NYCreefer]

1.026 using RSM hydrometer, 78*

 

[Uslanja]

1.025 using Instant Ocean (Marineland) Hydrometer at 78 degrees.

 

[BigAl07]

1.025 using Refractometer . . . was SHOCKED how OFF the Hydrometer was...:cursin:

 

[cheely13]

1.025 for me at 78 deg i use a refractometer but on my hydrometer it said 1.024 so it isnt to off i guess has anyone else checked as how far off there hydrometer is compared to a refractometer just wandering

 

[rgfast]

should have also asked how often do you check calbration had that get me once! I now check at least every 6 weeks with Pinpoint 53.0 mS

 

[Boomer]

Who's refract do you have ? How are you calibrating it ? Who's hydrometer do you have ?

 

[rgfast]

mines a Marine Depot refactometer ATC, an I calibrate with PinPoint 53.0 mS