View Full Version : why doesn't my salinity level go up and down after a few hours?

11/15/2006, 06:04 PM
i dont know what is wrong, and why is my water so warm

11/15/2006, 06:07 PM
Could just be your hydrometer ( if you use one ) Not too many details to determine the problem there. Pretty easy to find out why your water is too warm but once again, with details I have no idea. Could be the heat the pums give off, lights, or just the room temperature. Or your heater is turned up too much. ;)

11/15/2006, 06:09 PM
why doesn't my salinity level go up and down after a few hours?

Umm because its not supposed to.

11/15/2006, 06:21 PM
i mean why does it keep going up and down?

11/15/2006, 06:24 PM
Are you using a hydrometer to measure your SG?

11/15/2006, 06:25 PM
<a href=showthread.php?s=&postid=8555142#post8555142 target=_blank>Originally posted</a> by BiggySmalls
i mean why does it keep going up and down?

Get a refractometer and you will see that its not going up and down like you think it is. It sounds like you have a bad hydrometer or you are not getting all of the bubbles out.

11/15/2006, 06:26 PM
Its not supposed to, unless the temperature is also fluctuating a lot. What are you using to measure it? What is the temperature of the water each time? Are you 100% sure there aren't any tiny air bubbles stuck to the arm of your swing-arm hydrometer?

11/15/2006, 06:30 PM
ok i will check, thanks

11/15/2006, 06:32 PM
So did we determine your using a hydometer? You never really answered that question. I don't mean to be rude but we need more info in order to help.

11/15/2006, 06:49 PM
yeah but i know what i am doing now thanks

i made sure no bubbles were in the hydrometer
it is where it should be and the water temp went down

11/15/2006, 06:56 PM
I would still suggest getting a refractometer. I ran my tank for years using a hydrometer with mixed results. Then I got a refract and came to find I had been running the system at about 1.031 ish. When I adjusted the salinty things went much better...

11/15/2006, 07:14 PM
ok i will get one soon i am going tomorrow probably


11/15/2006, 07:19 PM
how much do they cost?

11/15/2006, 07:34 PM
<a href=showthread.php?s=&postid=8555597#post8555597 target=_blank>Originally posted</a> by BiggySmalls
how much do they cost?

$30 on up but well worth it.

11/15/2006, 09:00 PM
I think santa is buying me a refractometer for xmas :) Early on in the game since my tank is ~7 months old or so :) I really look forward to it

11/15/2006, 10:11 PM
You could also take your hydrometer to your local fish store and ask to test it against there refractometer or salinity meter (better yet). Then you would know how close you are.

My hydrometer (Marine Enterprises) is dead on. It adjusts for temperature also.

Speaking of which, your particular hydrometer may or may not self adjust for the temperature of the water. This is important to know otherwise you could be adjusting your salinity level wrong.