Salinity in the reef tank

[K9coral]

What is everyone's SG and temp in their tanks?

 

[Anonymous]

http://www.reefs.org/library/article/bi ... oonen.html

This should help. I keep mine at 80-82 F, and 1.026.

 

[shr00m]

just wondering why you keep it at 1.026 i thought specific gravity in the ocean was around 1.025..... not saying your wrong for doing it just curious why? if theres corals in the tank its good to keep it around 1.025... for fowlr 1.023 or a little lower is fine.

 

[Anonymous]

just wondering why you keep it at 1.026 i thought specific gravity in the ocean was around 1.025..... not saying your wrong for doing it just curious why? if theres corals in the tank its good to keep it around 1.025... for fowlr 1.023 or a little lower is fine.

many places such as the Red Sea (quoted often as 1.029) have much high specific gravity readings.
if i was keepign a FOWLR i would keep a more natural salinity.... i have heard that keeping a low SG for fish systems is an old LFS trick to save cash on salt... that and to supposedly ward off parasites.

 

[tvasi]

I had seen somewhere a table that showed the adjusted salinity, based on the temp. And I remember reading that at 80 degrees, your actual salinity is a tiny bit higher than the measured salinity.

Thats why I keep mine at 1.024.

Anyone have the calcs for the relationship between temp and salinity?

 

[leftovers]

I had seen somewhere a table that showed the adjusted salinity, based on the temp. And I remember reading that at 80 degrees, your actual salinity is a tiny bit higher than the measured salinity.

only if your device that measures salinity doesnt compensate for temperature then you will need to adjust based on the temp calibration point for your particular device.

Many meters these days are either temp compensating or tell you at what temp to measure your water so you dont have to do any conversion.

Tropic Marin for instance their hydrometer is calibrated for 77F.

Many refractometers too will say whether they are ATC (automatic temp. compensating) or not.
[/b]

 

[Anonymous]

Most refractometers are, AFAIK. Hydrometers aren't going to give you a very accurate reading in any case.

 

[cdeakle]

SG: 1.023 (refractometer)
Temp: 78-80

 

[leftovers]

Most refractometers are, AFAIK. Hydrometers aren't going to give you a very accurate reading in any case.

A good glass hydrometer is just as accurate as a refratometer. There qualtity hydrometers and crap refractometers. Like most things its how well its built.

And no not all refractometers are ATC.