Salinity is rising

[Bluebullie21]

So I'm doing a water change today and went to measure what the tank is currently at and I'm getting a reading of 1.029. I habe cleaned and recalibrated my refractometer and tested multiple times and keep getting this reading.

I have been doing daily top offs with ro water that is reading 0.

First question is obviously what could be causing salinity to rise in the first place.

I know that I need to bring it back down slowly but second question is how slow. Are those couple points something I can achieve I one day or should it be lowered over the next couple of days?


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[Pife]

So I'm doing a water change today and went to measure what the tank is currently at and I'm getting a reading of 1.029. I habe cleaned and recalibrated my refractometer and tested multiple times and keep getting this reading.

I have been doing daily top offs with ro water that is reading 0.

First question is obviously what could be causing salinity to rise in the first place.

I know that I need to bring it back down slowly but second question is how slow. Are those couple points something I can achieve I one day or should it be lowered over the next couple of days?


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I'd lower it over a week.

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[Lance A. Lot]

How are you calibrating the reefractometer? Calibration fluid or RO water?

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[Bluebullie21]

How are you calibrating the reefractometer? Calibration fluid or RO water?

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I have just been using ro water for calibration

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[babybull]

Need to get refractometer calibration fluid. I used to use rodi water and it was way off.

 

[Pife]

Need to get refractometer calibration fluid. I used to use rodi water and it was way off.

I agree. It is important to not use ro for calibration.

 

[Lance A. Lot]

I have just been using ro water for calibration

Yep this is how most people start. It is not a reliable way to calibrate.

 

[Bluebullie21]

Yep this is how most people start. It is not a reliable way to calibrate.

Looks like I'll be getting some calibration fluid

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[Schplitter]

I agree with the calibration fluid. Also if you are dosing magnesium that will add to the salinity. Some other supplements are salt based as well.

 

[clevername]

I have some fluid if you want to calibrate. Feels like a waste to spend 7$ on what is a 30 seconds test.

Your welcome to take some with you if you have a little glass vial to store. If i calibrated once a month, this bottle would last me 20 years

 

[Borntrippn]

Evap makes my salinity raise often

 

[Bluebullie21]

I have some fluid if you want to calibrate. Feels like a waste to spend 7$ on what is a 30 seconds test.

Your welcome to take some with you if you have a little glass vial to store. If i calibrated once a month, this bottle would last me 20 years

Will you by chance be at the swap? It'd be awesome if I could get a small amount from you

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