Salinity at 1.030

[kirru]

since i last did a water change, last sunday, my salt mix for the next water change was made up right after the last and has been mixing and heated for about a week now. started doing weekly changes rather than bi-weekly so i have to have it ready since i do mine on a whim lol

 

[mojo]

grouper therapy;437011 wrote: Robb that is not that high the red sea is that and higher in places.

Yup- according to Julian and Sprung, the salinity in the Red Sea is 1.040, IIRC. You're fine.

I have no idea why people are so hung up on maintaining 1.026. Like many things in the reef world, stability is much more important than the actual numbers.

 

[kayakatl]

mojo;437111 wrote: Yup- according to Julian and Sprung, the salinity in the Red Sea is 1.040, IIRC. You're fine.

I have no idea why people are so hung up on maintaining 1.026. Like many things in the reef world, stability is much more important than the actual numbers.

Stability probably is more important, but numbers out of the "preferred" range still spook everyone. Robb, Have you borrowed someones Refracto? Just to check it against yours? Just a thought. Maybe clean the crystal with a bit of vinegar to make sure? I don't know. I know I got in a hurry one day and forgot to wipe mine off. :doh: as long as coral is not suffering and fish are still :fish: I would just take your sweet time in bringing it back to where you are comfortable.

 

[ralph atl]

It's better to be in the middle range especially if your salinity is not accurate.

So maybe you think u are at 1.030? But u are calibrating RO/DI which is not going to graduate at the same rate. You might be at 1.035 really.

 

[lilrobb]

Refractionating salinity isn't linear - so if the base is -5 off - the level at 1.030 could be worse...

 

[dakota9]

mysterybox;437008 wrote: this doesn't explain your situation, but as an experiment I just put 0 tds water on my calibrated refractometer (to pinpoint), and it is -5 compared to 35 (or 1.026).

Hey Ralph,

In the above statement, what does the number 35 refer to?

Curious

Thank you!

 

[ricksconnected]

when water evaps your salt reading go higher. if your adding a salt mix at the right levels the end result will still read high.
i top off with ro/di. then make sure everything is right. after ive double checked then i do a WC.
maybe thats the issue rob.

 

[darren24]

If you want a 2nd opinion you can stop by and get my refractometer.....

 

[dakota9]

ricksconnected;437345 wrote: when water evaps your salt reading go higher. if your adding a salt mix at the right levels the end result will still read high.
i top off with ro/di. then make sure everything is right. after ive double checked then i do a WC.
maybe thats the issue rob.

This has actually happened to me before. Lesson learned, Top off before a w/c

 

[ricksconnected]

same here. sent the g.friend to kroger at like 1am one night.
water was low and salinity was up. she got back and i put water in the bucket and mixed in salt. totally forgot about topping off first. did the switch and the salinity was still high. DOH!
back to kroger a slightly bent g.friend went. lol
man i learned that night.

 

[skriz]

Robb, I wouldn't worry about it. If you want to lower it, just mix your next wc sw with a slightly lower salinity.

 

[ralph atl]

Dakota9;437210 wrote: Hey Ralph,

In the above statement, what does the number 35 refer to?

Curious

Thank you!

<span style="font-family: Arial"><span style="font-size: 13px">sorry, busy at work today! </span></span>


<span style="font-family: Arial"><span style="font-size: 13px">35 ppt
sg = 1.026</span></span>
<span style="font-family: Arial"><span style="font-size: 13px"></span></span>
<span style="font-family: Arial"><span style="font-size: 13px">natural ocean water has a salinity of about 35 ppt (parts per thousand), corresponding to a specific gravity of about 1.0264 and a conductivity of 53 mS/cm.</span></span>