Losing SPS color

[ajhudson15]

I'm currently losing pe and color on my sps. I've had sps for about a year now. Not all my sps is losing color but it's starting to hit other pieces.

It's a 75 gallon system with about 30 in the sump. The only thing I have changed recently was I went from sodium bicarb to soda ash because I thought my ph was low.

Alk-8.5
Cal-400 currently residing this a little
Po4- 0.07
No3- 8
Ph on my handheld is 7.7 but it's old. Ph on a test so said 7.8-8.4.
Temp doesn't swing and stays around 78.9


I have talked with a fellow reefer and he is stumped as well on my I ask of a sudden lost color

This piece is the one that mainly losing color. Was bright green red and pink with yellow ends. The top I dragged of for my buddy so that's why there is a spot on top.
Any help is appreciated

 

[KrisReef]

Go back to what was working.

 

[ajhudson15]

Go back to what was working.

I thought about that but it's still alk none the less so shouldn't matter

 

[Skynyrd Fish]

How about check all equipment for corrosion. RO/DI TDS at zero?

 

[ajhudson15]

Yes rodi is fine. I haven't checked for corrosion so that's a thought. I dont have any stray voltage

 

[Skynyrd Fish]

If you have not done a ATI or triton test recently you may want to consider it. I ended up having a small trace of copper. I still have not found the source, but upped the water changes and its helping.

 

[ajhudson15]

If you have not done a ATI or triton test recently you may want to consider it. I ended up having a small trace of copper. I still have not found the source, but upped the water changes and its helping.

Yea that is definitely my next move