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oro50

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So last night I filled up most of my tank if not all of it, with RO/DI water.

I checked the salinity level when I was done, and it was a little bit too high.

40 ppm, or 1030.

I started taking out some of the water to try to lower the salinity level.

Yet as I continued to do so, at this point my tank now is 50% empty, so I basically have to make a bunch more RO/DI water to replace what I took out.

However the salinity level reads just about where it was 1030 maybe a little lower now.

I also took out so much water, I'm having problems taking new hydrometer readings.

Just wondering if I now make new water, since I took out about 50% of the water already should this be a sufficent amount so that a red maroon clownfish can be in soon?

I don't want to take out even more water that took a while to make.

Yet as I said it's getting harder now for me to make hydrometer readings.

I didn't add a-lot of salt. I added the amount to cover how much I was putting in the tank, enough salt for 10 gallons worth, so I'm not sure why it was so high when I first took a new reading.

I'm hoping that all I can do now is just make some new RO/DI water and then (without any new salt) just add it to the existing saltwater that is in the tank?
 

Nandez13

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If you don't have any livestock in there, then add more saltwater but with a lower salinity level. If your tank is half full and has an SG of 1.030, then add the same volume of water but with an SG of 1.020 to put your tank somewhere around 1.025. Adjust the number based on how much water you actually plan on adding and what your current salinity level is in. If you already have fish in there you'll want to reduce the SG at a slower rate.

Test your tank water and the water you plan on adding multiple times with the hydrometer to make sure you have a good reading. Make sure you calibrate it with fresh water in between uses.
 

oro50

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Yes I don't have livestock in there right now?

Another question about this? If this sea salt is suppose to dissolve fast, why can't you (especially if you don't have livestock in the tank at the moment), just add more sea salt directly into the aquarium water? Won't this sea salt eventually just dissolve as it dissolves when you mix it with water your making in a bucket?
 

Adamc1303

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If there's nothing in the tank you should add fresh water only and then add the salt a little at a time to get it to the 1025 range. It will be easier for you as a beginner to do it that way. Get a refractometer and measure the salinity before adding the water to the tank.
 

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