Why are half of these guys dying?

[Tabbers920]

Why are the half on the left regressing to mush? Is this coral on the left doing something to them?
TIA

 

[zoaprince]

There looks to be a sponge at the bottom polyps which can borther them. That doesn't explain the left most polyps. Any changes in your lighting or water parameters? Did you feed them recently?

 

[Tabbers920]

There looks to be a sponge at the bottom polyps which can borther them. That doesn't explain the left most polyps. Any changes in your lighting or water parameters? Did you feed them recently?

Good observation, seems like sponges just exploded in my tank??? Why did that happen?
No other changes in light, params, or feeding.

 

[chaostactics]

It looks like many (most/nearly all) of your zoa are starving for light

 

[Tabbers920]

Yeah, I agree..
I have (2) Kessil 80 tuna blue lights. On 100% intensity... ramp up and down. on at 12p/noon and off at 1030p.
Thoughts?