What is going on with my hammer Euphyllia?!

[Dakota199]

I got a really nice hammer Euphyllia about 3 weeks ago, it did great the first week then slowly started declining and now looks downright horrible. All my other corals, and fish are fine. My parameters are
Temp- 79-80
Ph-7.8-8.0
Salinity 1.024
Calcium-420
Dkh-9
Ammonia-0
Nitrite-0
Nitrate-<10
Phosphate-0
So all parameters are in order.
Lighting might be the problem.
I'm running a vipar spectra LED
I don't own a par meter but have rented one a couple times
The light isn't the greatest, my par is around 350-400 at the highest down to 100-200s in the lowest.
Where I got the hammer they run they're lights under 200 par.
I put the hammer on the sand bed thinking it was low enough par. I'm thinking I shocked the hammer with higher lighting than what it was used to. I have since lowered my lighting more and moved it under some shade.
Anyone have any thoughts on what this is? And how or if I can remedy it?
Pics are from week one vs now.

 

[Rlreefing]

The lighting is fine as these corals do not mind lower light. Did you have the hammer next to the sebae?

 

[Dakota199]

The lighting is fine as these corals do not mind lower light. Did you have the hammer next to the sebae?

I'm worried I had it in to much light at the beginning, and yes it was next to the Seabae. Is that a problem?

 

[Rlreefing]

They are both aggressive coral that demand their own territory. The Sebea may have stung the Hammer causing it to close up. keep the flow moderate and let it be, if you mess with it and move it around to try and get it to open up it will stress it further and insure its demise. Also check out tidal gardens video about hammers

 

[Dakota199]

They are both aggressive coral that demand their own territory. The Sebea may have stung the Hammer causing it to close up. keep the flow moderate and let it be, if you mess with it and move it around to try and get it to open up it will stress it further and insure its demise. Also check out tidal gardens video about hammers

Thanks for the info, they weren't touching but I guess it's possible. My clown is also going back and forth between the hammer and sebae.

 

[Rlreefing]

My clown is also going back and forth between the hammer and sebae.

It is always cool when clowns host LPS corals and an anemone at the same time. keep us posted about the corals health.

 

[Eagle_Steve]

Thanks for the info, they weren't touching but I guess it's possible. My clown is also going back and forth between the hammer and sebae.

The clown being in the hammer could be irritating it as well. Especially if it is rubbing the hammer hard. This will cause the "meat" to scrape against the skeleton and make the hammer retract.