How to increase my salinity

[nzkiwi80]

So my salinity is 1.023 - 1.024, so very low.

I do weekly water changes, about 21L and have been adding around 600grams of salt, so not enough. I'm not sure why my salinity is not lower to be honest. I use a 22Kg old Red Sea bucket and fill it to about an inch from the top of RODI water.

Anyway, to increase. How many grams should I add for my next water change? how many grams should I add per day until I sit around 1.026

I have a 350L red sea reefer

 

[Pridedcloth3]

You are in a good spot, mine sits around the same and had been for years. If that's what it is and it's consistent leave it alone. There's no static salinity in the ocean. It gets down to 1.020 in some areas and is straight brine in the more extreme places. Stop chasing numbers.

 

[nzkiwi80]

My corals aren't doing well so want to increase it

 

[JonoH]

I generally just overfill the sump, and let it increase slowly as water evaporates.

 

[Pridedcloth3]

Just slowly add to your filter sock and check. But still that's well in range and I'd look in different areas. Again I'm in that exact range and I can't keep up with dosing and I'm filled with sps and lps.

 

[MoeStachio]

After a water change I let it sit for about an hour, and test it again with refractometer

Of I need to add salt, I'll remove some tank water (about 2cups, after disabling the ATO) and add a little salt, then test it again til it's about 1.030.

Then I'll slowly add it to the tank, let it sit, and test the tank again (generally take the time to recalibrate the refractometer while I wait)

I only have a 15ga tank tho, but I would assume the same principle would work for you

Then it's just a matter of testing the salinity and adjusting the ATO to ensure it's doing its thing

 

[winxp_man]

Here is how you do it. Use one of these calculators. Simple.

https://www.hamzasreef.com/Contents/Calculators/
All salinity calculators you will need. Make sure to click the salinity tab at the top of the page.

-Cheers

 

[Randy Holmes-Farley Verified Community Expert]

The best and easiest way to boost salinity is to just replace evaporated water with new salt water. That ensures a slow steady rise and does not waste salt.

I personally would raise it, although I would not be sure it is causing coral issues.