Is coral okay.

[frankin09]

Is this coral dying? I’ve recently switched salt and I don’t know if it is affecting it.

 

[shakacuz]

they look agitated. but it’s probably due to the change in salinity. give it time to acclimate

 

[vetteguy53081]

Looks stressed but not dying.
There are a number of factors why zoas close up. Some are water movement/flow as zoas do not require the consistent high flow conditions that SPS corals do. I would consider a moderate flow environment ideal but Zoanthids, like most corals, can adapt to low or high flow. In high flow, you will typically see polyps grow closer to the rock with shorter stalks. Another is lack of feeding and food as infrequent feeding and ultra low nutrient conditions can lead to entire colony meltdowns. Target feeding is not a requirement as Zoanthids are photosynthetic. I have found that target feeding Zoanthids always provides mixed results, when a food particle falls onto the polyps.

Back to parameters, good water quality is a must.
dKH: 8.0 - 10.0
Calcium: 420 - 440
Magnesium: 1300 - 1350
Iodine: Maintained via regular water changes or manually at small dosages
Temperature: 78-79 degrees
pH: 8.1-8.3
Phosphates: .02 - .03
Nitrates < 5

Asterina stars, little tiny tiny spiders and nudibranchs also will make them miserable to point of death as will aptasia, worms like spinoids or vermetid snails. A few things to look for. Hope this helps

 

[frankin09]

Looks stressed but not dying.
There are a number of factors why zoas close up. Some are water movement/flow as zoas do not require the consistent high flow conditions that SPS corals do. I would consider a moderate flow environment ideal but Zoanthids, like most corals, can adapt to low or high flow. In high flow, you will typically see polyps grow closer to the rock with shorter stalks. Another is lack of feeding and food as infrequent feeding and ultra low nutrient conditions can lead to entire colony meltdowns. Target feeding is not a requirement as Zoanthids are photosynthetic. I have found that target feeding Zoanthids always provides mixed results, when a food particle falls onto the polyps.

Back to parameters, good water quality is a must.
dKH: 8.0 - 10.0
Calcium: 420 - 440
Magnesium: 1300 - 1350
Iodine: Maintained via regular water changes or manually at small dosages
Temperature: 78-79 degrees
pH: 8.1-8.3
Phosphates: .02 - .03
Nitrates < 5

Asterina stars, little tiny tiny spiders and nudibranchs also will make them miserable to point of death as will aptasia, worms like spinoids or vermetid snails. A few things to look for. Hope this helps

I just turned on the light and it went to this.

 

[vetteguy53081]

I just turned on the light and it went to this.

Maintain moderate light. Too little light and they stretch for more light. Too much and they close up
Also add a little iodide to tank weekly

 

[frankin09]

Maintain moderate light. Too little light and they stretch for more light. Too much and they close up
Also add a little iodide to tank weekly

Would I have to put them higher?

 

[shakacuz]

Would I have to put them higher?

you can put the light intensity up, or raise the zoas closer to the light. but that’s IF they stretch for light

 

[frankin09]

you can put the light intensity up, or raise the zoas closer to the light. but that’s IF they stretch for light

This is my light percentage.

 

[shakacuz]

This is my light percentage.

not sure how to use that app, maybe someone with the same light can help. i use a hydra 32hd and we just slide up or down for intensity

 

[mdb_talon]

Their is no indication of anything wrong with them. It is not unusual for them to close up at times.

 

[frankin09]

Maintain moderate light. Too little light and they stretch for more light. Too much and they close up
Also add a little iodide to tank weekly

At night I turn off the lights completely.

 

[vetteguy53081]

At night I turn off the lights completely.

Thats acceptable