What do you use to calibrate? I've always used RO water....<a href=showthread.php?s=&postid=12543099#post12543099 target=_blank>Originally posted</a> by melev
No, you need a digital volt meter to do this. You can buy a cheap one at Harbor Freight.
Things to check, which you've already began to do:
Salinity - same thing happened to me, except my tank was 1.021sg / make sure you are calibrating it to 35ppt, and not to 0 using distilled or RO water.
<a href=showthread.php?s=&postid=12562663#post12562663 target=_blank>Originally posted</a> by Goodwin9
Sam..were you able to determine where the stray voltage was coming from?
<a href=showthread.php?s=&postid=12562668#post12562668 target=_blank>Originally posted</a> by Goodwin9
What do you use to calibrate? I've always used RO water....
<a href=showthread.php?s=&postid=12560197#post12560197 target=_blank>Originally posted</a> by tangdiver
Yep agree with the single polyp...have quite a few...one is the ling sey cap (spelling)
Also had a feeling on the voltage....but not alot of people believe me until I hook up a volt meter...damn know it all aquaists.
Grant
<a href=showthread.php?s=&postid=12566747#post12566747 target=_blank>Originally posted</a> by MammothReefer
So how were you using the multimeter, when I had my problems I tried mine and couldn't get it to work correctly.. Are you putting both probes in the water? One probe in the water 1 grounded outside the tank? What setting ect ect..