My Salinity Wont Go Down!!

[Sebastiancrab]

Based upon what you have written, have you been removing water and then adding distilled water with an ATO not running? I have a 40 breeder. Swapping out 2 to three gallons should fix your problem. I don't know how much is in your sump.

 

[threebuoys]

Method and calculations are also here

https://www.reef2reef.com/threads/fish-disease-calculators.997311/

 

[jgabbsxx]

I did a 5 gallon water change today with RODI water & my salinity is back to normal. I actually went back to purchase pre-mix back from that same place as I mentioned and it measured at 1.030. Silly mistake of me not to sample that water prior but lesson learned!

 

[Court_Appointed_Hypeman]

Thats awful high, have you calibrated your refractometer?

 

[jgabbsxx]

Thats awful high, have you calibrated your refractometer?

I solved the issue on it, pre-mix was too high when i did my water change. Water changed today and added RODI and back at 1.025.

 

[Spare time]

You can calibrate your device to zero using distilled water.

It will be less accurate

 

[Pistondog]

Best to calibrate around measudement point.

 

[Court_Appointed_Hypeman]

I solved the issue on it, pre-mix was too high when i did my water change. Water changed today and added RODI and back at 1.025.

I would confirm with them they mix that high. I think your readings are off. Salt is expensive and I would be very surprised they are putting in that much more salt than they should.

 

[jgabbsxx]

I would confirm with them they mix that high. I think your readings are off. Salt is expensive and I would be very surprised they are putting in that much more salt than they should.

Did confirm with them! Another LFS has his salinity at the same as well which I found odd.

 

[Rick's Reviews]

Hi Reefers!

I have a 40 gallon breeder tank that has constantly been at 1.025 specific gravity for my salinity and now I am at 1.030. I usually get my pre-mix from a specific LFS, but I was not in the area at the time I needed water so I went to another store that I never used their water. My mistake of not measuring the salinity on it prior to a water change. I have been struggling to get it back down to 1.025. I have now put at least 2 gallons of distilled water in to try and combat this, still no change. Do I do a water change with my original LFS pre-mix(what % of water would I even do?), keep adding in distilled water until it changes, or what else?

Literally anything helps. Thankfully my fish & corals are not bothered by this, actually looks like my corals prefer this. Let me know!

EDIT : i have a hand held refractormeter

Your adding the salt so the easiest way to fix this is just add general RODI water without adding any salt, add all your additional food, chemicals etc as usual but just do not add any salt