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Old 06-01-2005, 11:28 PM   #1
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My saltilinity sp? is at 1.021 I've been trying to raise it.

I thought a good way to raise it would be to top off with salt water instead of ro water. Well I've been doing that for about 3 days and it hasn't budged. I'm using premixed salt water not sure of the brand I buy it from the LRS. Why isn't it going up? their mix test 1.21 maybe there is the problem but I thought surely with evaporation it would rise some. Any suggestions are welcome.
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Old 06-01-2005, 11:33 PM   #2
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Is there some reason you wanted it to be higher? Why don't you buy a bag of salt and raise the salinity of your top off water to about 1.025 before adding it to the tank. I keep our water at 1.025 in both tanks, but I know alot of people prefer 1.021 to 1.023.
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Old 06-01-2005, 11:35 PM   #3
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Nothing wrong with 21. But your idea will work, just very slowly. Why not stregnthen the mix a bit for top off. Most fish are pretty tolerant to small changes in salt. .01-.02 in a days time probably wouldn't hurt
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Old 06-01-2005, 11:40 PM   #4
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I was trying to get to 1.023 slowly I've read this is idea. I will just keep at it slowly thank you for the advise.
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Old 06-02-2005, 10:41 AM   #5
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The problem is, topping off with the same salinity is only gonna raise your tank salinity by like 0.00001 (yes, I made that figure up, but its probably not that far off).

You'll want to use a much saltier top off water to raise SG noticably. However, you shouldn't raise it too fast, particularly if you have inverts in the tank. Something like 0.0001 per day.
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Old 06-02-2005, 11:05 AM   #6
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Something like 0.0001 per day.
How in the world would you ever be able to accomplish this (especially with the use of a hydrometer)? I could see .001 per day. I think .0001 per day is a little farfetched but I could be wrong. JMHO
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Old 06-02-2005, 01:03 PM   #7
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What are you using to test your water??

I had a Hydrometer that seemed to always read 1.022 even after some significant evaporation. I picked up a Refractometer and found that my salt level was 1.027 (confirmed by LFS with some type of digital meter).

I guess what I am saying is you might want to double check that 1.021 is the true value before trying to raise it.
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Old 06-02-2005, 01:41 PM   #8
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I'm using a refractometer. I may have my store test it before I add anything else. I don't want to mess anything up.

I'll have to pick up some salt.
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