strange favia dying

[1guydude]

Move em up. I agree the 1 of 4 doesnt look too hot.
Id bump the salt up too to 1.025 or 26 even.
The alk stable at 8 or 9 is key. Stable. Temp flux can be stressful. What size tank? Sorry if said.
D

 

[1guydude]

The sand could be an issue if not enough flow. The sand can settle on the polyp.
D

 

[crocodile receptionist]

59wt likely not enough

Do you think this would cause the coral to do what it's doing now?

 

[Hermie]

tissue loss IMO is either salinity problem, alkalinity (too high) or pest eating it; if alk was too low, it slows coral skeleton but not as much tissue growth. What are you using to test your salinity?

 

[vetteguy53081]

They respond to light and in turn would retract as they do at night

 

[vetteguy53081]

tissue loss IMO is either salinity problem, alkalinity (too high) or pest eating it; if alk was too low, it slows coral skeleton but not as much tissue growth. What are you using to test your salinity?

This is not loss but rather retraction

 

[zaq11]

okay, do you think this is the reason, also a bunch of my other coral is closed and my parameters are all good. Does anyone knows what is happening?

the current flow in the tank has a factor, too much flow or very low flow can affect the coral, did you change the position of the affected coral to a different area

 

[crocodile receptionist]

the current flow in the tank has a factor, too much flow or very low flow can affect the coral, did you change the position of the affected coral to a different area

I had them close to the and bed in low ish flow and now I moved them in the middle of the tank with moderate flow