Zoa colonies going white.

[eqbal9947]

Hey guys. I’ve had a few colonies go white over night.
They’re not huge, like 20-30 head colonies.
Half of my stratosphere colony is white now.
Any ideas?

 

[eqbal9947]

Bump

 

[bubbgee]

Could be bacterial. Could be chemical. Do you run carbon or dose iodine?

 

[eqbal9947]

Could be bacterial. Could be chemical. Do you run carbon or dose iodine?

I dose iodine and sometimes run carbon

 

[eqbal9947]

I dose iodine and sometimes run carbon

I do both. Carbon once in awhile

 

[Gumbies R Us]

What are your light settings?
FTS?
Parameters?
Any changes in your tank?

 

[p1u5h13r4m24]

Nutrient levels? I’ve noticed some astrenia stars on my zoas before as well

 

[eqbal9947]

What are your light settings?
FTS?
Parameters?
Any changes in your tank?

My tank is solid, parameters are good. not sure about trace elements.
but its singular colonies or frags at a time. leads me to believe its not my parameters.
Im thinking its a parasite specific to zoas

 

[eqbal9947]

Nutrient levels? I’ve noticed some astrenia stars on my zoas before as well

nitrate 30
phos. 0.14

 

[p1u5h13r4m24]

I’d check your trace elements. If you don’t want to do that just do some large water changes to be safe. Maybe take a test before water changes to see what element may be off.

 

[p1u5h13r4m24]

I’m sorry not trace elements but run an ICP

 

[twentyleagues]

It looks like something may be covering them, but the pic is not good. Need a white light pic with better focus.

 

[eqbal9947]

An update on this.
It looks like whatever it is goes from colony to colony. It’ll kill a few heads and the rest will be retracted for a week or so then come back.
Have not done a trace element test yet as life has been super busy lately. But I will soon

 

[littlebigreef]

Do affected zoas take on a shriveled like appearance? If so at death does the tissue appear ‘blow out?’