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camm1021
09/12/2006, 06:59 PM
My hydrometer was reading low and i added more salt water and it didnt move. 90 gallon tank and i added five gallons of saltwater.
abugs1985
09/12/2006, 07:09 PM
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/product/prod_display.cfm?pcatid=9957&Ntt=refractometer&Ntk=All&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?
meco65
09/12/2006, 07:26 PM
Fill the hydrometer with RO/DI water and let it set for 10 or so min. Than try the reading again.
nmprisons
09/12/2006, 07:30 PM
rinse it really well and make sure there are no debris in it ... but, as abugs said, you need a refractometer.
2swift
09/12/2006, 07:40 PM
JMHO
Refractometer good one =50$
How much you got invested!
Don't skimp on your tanks life lines!