corals not opening up anymore

[Kengo]

Hi, my tank is around 8 months old and it was running smoothly until around a month ago. I started to notice that some corals close up and around 2 weeks ago they really stopped opened up. It's mostly the hammer coral and acans. I was wondering what I should do. I also tried reducing the power of my light. (the dead head on the hammer has been dead for a while )

Salinity-1.023
ammonia - <0.15
nitrate - 10
nitrite - 0

 

[Flippers4pups]

Tells us more about your tank. 1.023 is low on salinity. Needs to be 1.026 or 35 PPT.

What test kits do you have other than nitrate (nitrite at 8 months isn't something you would need to test unless you had a major recycle)

RO/DI water? ATO? What lights? ......etc.

 

[JoshO]

Do you test phosphate? pH?

 

[David Calzada]

Check your salinity make sure is 1.025-1.026.
Check your parameters with test kits that are more accurate like red sea,, hannah, or salifert.
Adjust your parameters slowly. Test continuously to make adjustments.

 

[Kengo]

Tells us more about your tank. 1.023 is low on salinity. Needs to be 1.026 or 35 PPT.

What test kits do you have other than nitrate (nitrite at 8 months isn't something you would need to test unless you had a major recycle)

RO/DI water? ATO? What lights? ......etc.

ok I added hgiher salinity water to equal it out. I have PH and Ill test it rn and I also have Kh, Mg, and Ca, but im pretty sure Kh and Mg expired. I also use RO/DI water and have an ato. I have 2 Ai primes over a nuvo 30l and a mp10. The temp is around 79-81degrees. I also have a protein skimmer.

 

[Kengo]

Check your salinity make sure is 1.025-1.026.
Check your parameters with test kits that are more accurate like red sea,, hannah, or salifert.
Adjust your parameters slowly. Test continuously to make adjustments.

I use salifert for ammonia, nitrate, and nitrite. and i have red sea mg, kh, and ca tests and ph APi test kit which is less accurate.

 

[Flippers4pups]

Okay, Have you change anything lately? Are you dosing anything?

 

[Kengo]

Okay, Have you change anything lately? Are you dosing anything?

nah everythings been the same

 

[JoshO]

Don't raise the salinity in one go! Do it a small amount each day.

 

[Kengo]

My Ph is 8.0

 

[Marc2952]

I would let water evaporate on its own until it reaches 1.025 or 1.026

 

[JoshO]

I would possibly invest in a phosphate kit, if this is sky high you might be able to identify the issue