Coral not doing well

[aduco15]

Can someone help me get a plan for my tank. All was well until about three weeks ago. I noticed salinity was low and I brought it up. Nitrates, alkalinity and phosphate were all fine but the coral are stressed. Even softies aren’t opening. I don’t know what to do. I thought about doing two 50 percent water changes but I don’t know what to try. So far I’ve tried uv for dinos and brightwell restor for corals. The tank is almost two years old.
The rodi water I’ve been using is at 0 ppm and I haven’t changed salts. Lighting hasn’t changed.
Parameters:
1.026 SG
78 degrees Fahrenheit
2 ppm nitrate
7.8 alk

 

[Flippers4pups]

Can someone help me get a plan for my tank. All was well until about three weeks ago. I noticed salinity was low and I brought it up. Nitrates, alkalinity and phosphate were all fine but the coral are stressed. Even softies aren’t opening. I don’t know what to do. I thought about doing two 50 percent water changes but I don’t know what to try. So far I’ve tried uv for dinos and brightwell restor for corals. The tank is almost two years old.
The rodi water I’ve been using is at 0 ppm and I haven’t changed salts. Lighting hasn’t changed.
Parameters:
1.026 SG
78 degrees Fahrenheit
2 ppm nitrate
7.8 alk

Times like these, fall back to the basics. Discontinue any supplement dosing. Run some GAC and reduce your light intensity till your corals come back. A small water change may help, not a large one unless you know that there is contamination issue.

 

[sfin52]

Can someone help me get a plan for my tank. All was well until about three weeks ago. I noticed salinity was low and I brought it up. Nitrates, alkalinity and phosphate were all fine but the coral are stressed. Even softies aren’t opening. I don’t know what to do. I thought about doing two 50 percent water changes but I don’t know what to try. So far I’ve tried uv for dinos and brightwell restor for corals. The tank is almost two years old.
The rodi water I’ve been using is at 0 ppm and I haven’t changed salts. Lighting hasn’t changed.
Parameters:
1.026 SG
78 degrees Fahrenheit
2 ppm nitrate
7.8 alk

Welcome to r2r
I would also add take your water to a lfs and have them test it. When was the last time you calibrated refractometer?

 

[aduco15]

Welcome to r2r
I would also add take your water to a lfs and have them test it. When was the last time you calibrated refractometer?

Two weeks ago. I have a hanna salinity checker. Used their packet to calibrate it and that’s when I noticed it was off.

 

[sfin52]

Two weeks ago. I have a hanna salinity checker. Used their packet to calibrate it and that’s when I noticed it was off.

How much?

 

[aduco15]

How much?

When I measured it after recalibrating it was 1.021. Brought it up over the course of five days