salinity and dissolved oxygen

[aliyesami]

can anyone tell me the range of these two things should be measured in an reef aquarium ?

also is there a formula available to convert specific gravity to conductivity?

thanks

 

[oscarinw]

Formulas for salinity to conductivity are normally expressed in psu salinity so that might be a challenge because of seawater ranges. Here's a page with a function:
LINK

As far as oxygen levels they look like this:

LINK