Acan losing skin, tissue necrosis or bleaching?

[peted]

Hello, I am a noob. So here it goes..
Acan started off great, amazing color, placed on the sandbed after acclimation etc. Moved it after two weeks cause it started loosing fluorescents. Now it gained fluorescents back for the last month, but I have noticed some tissue loss over the last 2 weeks. It's getting worse. Some days it's fully opened all day and night when lights are on, others it's closed 3 hrs before lights go off. Today 1 polyp appears to be closed and others open.
Light schedule attached has been in acclimation mode. Tank is 10 gal. Using redsea coral pro.
78 deg
1.025 sg
Nitrates are always between 5-10 API test
Ammonia and nitrite 0.
RO water
Chemipure blue, no skimmer.
Flow is at minimum pulse (2.1) on the mightyjet and it looks ok.
Tank is 3 months old.
Weekly 2-3 gal water changes

Any help or suggestions?

 

[officialreefbros]

Do you have other coral? What are your phosphates at? Chemipure does a really good job at absorbing phosphates, sometimes too good and you could be at 0 and the coral is starving.

 

[peted]

Torch, hammer/frogspawn, and space invader Pectinia.
The space invader is growing over the plug now, the torch extends, but I feel like it's not fully extending, like I expect more.
Hammer/frogspawn looks good to me.
This is when the acan is fully opened obviously. This was last week. It looked like this a night or two ago as well.

Unfortunately I don't have my phosphate reagent anymore. Need a new one.

I was thinking maybe the redsea coral pro was burning it maybe?

I'll go buy more reagent tomorrow for phosphate and check as well.

Thank you.

 

[peted]

Here is my light schedule. It was in acclimation for the last 3 weeks, 60%. Just stopped today. Acan is about 3" from the bottom of a 13" deep tank ai prime with diffuser is mounted 11" or so above the water.

 

[HudsonReefer2.0]

Ph alk calcium Mg? Flow. Lighting

 

[DHill6]

Feed it Coral Frenzy small pellets also phyto seems to help mine.

 

[HudsonReefer2.0]

Here is my light schedule. It was in acclimation for the last 3 weeks, 60%. Just stopped today. Acan is about 3" from the bottom of a 13" deep tank ai prime with diffuser is mounted 11" or so above the water.

That a modified saxby schedule

 

[peted]

I'll try the Coral Frenzy...target feed or just blow it around?
I am using a mightyjet 328 gal return with a IM spinstream. Set at the lowest so like 17x flow I think. No power head it's a 10gal cube

Redsea coral pro with 2-3gal water changes weekly