How do I get salinity down?

[Fredso]

For some reason my salinity shot up to 1.35. My tank is a year old. I have a 30 gallon w fish, live rock and just added frags over the past 2 wks. I added 5 gallons of fresh water today and its still reading high. How else can I get it down.

[Timnghiem]

Adding 5 gallon should drop the sanity a little bit. Did it dropped if it didn't many check your refractometer.

[worm5406]

What are you using to test your water?

[11f150]

Take out some of your current water in your tank and replace it with just RO/DI water slowly. Keep testing it

[Dmorty217]

Do a water change but just add RO water back instead of saltwater

[Fredso]

Testing with refreactometer. I already changed 5 gallons and it dropped from 1.38 to 1.35. Should I replace more.?

[Mr.Saltz]

Yes. you have been using this refractometer and know it is reliable correct?

[SushiGirl]

Are you leaving out a zero? 1.035 rather than 1.35?

[Fredso]

Ok. Yes it's fairly new and calibrated. Sorry. It's 1.035.

[PAnanoguy]

Im still worried by such a large jump in salinity. It almost doesnt seem possible!..?... Have you double checked the calibration on the refractometer? Do you have anything else to check the SG with? You are topping off with fresh water not saltwater, correct?

[sasharotty]

Do you calibrate with the 35 ppt solution. I agree that's quite a jump.

[Sugar Magnolia]

How did it get so high? Are you topping off daily with RO/DI water? You need to bring it down slowly.

[Fredso]

i think the store where i bought water gave me salt water instead of ro/di water to top off tank. i had a little left in jug and its very salty. im gonna take a water sample to have tested for second opinion before doing anything to water.

[worm5406]

Keep doing PURE RODI and get it lower. Slowly.

[SUPERSTOCKRACER]

keep changing with fresh RO water till you get it to 1.024-1.025. Do 25 gallons at a time and add slowly.
Corals and fish dont like it that high.

[scuzy]

keep changing with fresh RO water till you get it to 1.024-1.025. Do 25 gallons at a time and add slowly.
Corals and fish dont like it that high.

His tank is only 30 gallons wouldnt 25 gallons turn it into fresh water tank? :)

[worm5406]

I have a 30 gallon w fish...

[PAnanoguy]

Get your own ro/di. Asap

[cap032]

i think the store where i bought water gave me salt water instead of ro/di water to top off tank. i had a little left in jug and its very salty. im gonna take a water sample to have tested for second opinion before doing anything to water.

You just learned a valuable lesson.........even your lfs can make a mistake. Before I had my own RODI unit, I bought water from my lfs as well. I always dipped a finger in and taste tested to be sure I had the right thing. My Lfs made that same mistake once but luckily I caught it. If I were you, I would take it slowly. Remove 1 gallon 2 times a day and of course replace with RO. You will be in good shape in a few days.

[Fredso]

Thank you all for the advice I picked up 5 gallons of ro today and the process begins...

[Handil]

I actually take my refractometer to the LFS if I buy water from them for salt and fresh. The place I was going to would short there salt to make more �� and I quickly called them out when I figured it out. Not that they cared haha.