What is the problem here?

[menta]

Can you tell what's make these Zoas get close?

 

[fkbsar]

They look like they're melting away. What are your tank parameters?

 

[menta]

Nitrate 1 (Salifert), Phosphate 0.03 (Hanna)
Alk-7 Ca-450
Light is MH 250Wx2 (7 hours) + 2xT5 (Actinic) and 2xT5 (Daylight) X 12 hours
~450 litter tank. Mainly SPS and Zoas.
2xVortech pumps. Very powerful cone skimmer (~800 liter air flow)
Using Fauna Ultra power trace 1234, daily dosing of Ca and Buffer.

 

[650-IS350]

pH? temp ?

 

[menta]

ph 8-8.4
temp 27c

 

[billy1724]

light , salinity

 

[menta]

Light is MH 250Wx2 (7 hours) + 2xT5 (Actinic) and 2xT5 (Daylight) X 12 hours

Salinity 1.024

 

[seaduck]

how long have u had them in ur tank? If they r new then they might be getting too much light. How much flow on them?

 

[650-IS350]

Wondering if you have them place away from good flow, maybe more strong IN-Direct flow.

 

[menta]

They are on the ground. Not getting a direct flow.
will try to change.

 

[lilalove]

That looks like what my one surviving colony looked like after my rabbitfish started munching on them. I rehomed him, but it was too late for the polyps. Any fish that might be nipping them?

 

[menta]

no one is biting them