Specific Gravity

[kj5432]

I have an SPS tank and I have been keeping my salinity at 1.025. What is the optimal SG for an SPS tank? I think natural ocean water is around 1.023. Is that the case?

 

[DrBDC]

NSW is 1.026 or 35 ppt

 

[turtlespd]

1.o25

 

[trueblackpercula]

1.021to 1.025

 

[mntl]

any of the above, just stable .

-John-

 

[seatom]

I drive my tank with 1,0237.
Normal value for tropic ocean is 1,022-1,025. Red Sea is higher, till 1,028

 

[MiddletonMark]

NSW ... 1.026

Randy has a good article IMO on Reef Aquarium Water Parameters:
http://reefkeeping.com/issues/2004-05/rhf/index.php

 

[DrBDC]

And from our former forum leader Dr. Shimeks book:

This follows the topic of temperature on page 15 which I highly recommend everyone read:

"There is a similar range for acceptable salinity, but it is a narrow band, around 35-36 ppt. At normal reef temperatures, this is a pecific gravity of about 1.025-1.026.

 

[Kip]

i like to go by salinity since it is more of a direct reading... but i run 35ppt in my tanks.

 

[moumda]

Agree with select a value close to above mentioned and do your best to keep it stable.