What is the hydrometer reading? You definitely should pick up a refractometer....hydrometers I've always found to be worthless. I'm guessing if you added five more gallons of saltwater your SG is going to be way high. Here is a link to a good quality refractometer... http://www.drsfostersmith.com/produ...&Ntx=mode+matchallpartial&Np=1&pc=1&N=0&Nty=1
Did you give the new salt water time to circulate around your tank before you took another measurment with the hydrometer?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.