Zoanthid issue - Help identify

EakTheFreak · Mar 30, 2020

Hi R2R,

Any idea what is going on with these SUNNY D ZOA’s. slowly Been closing up and curious what your best guesses would be. Did a revive dip & some opened back up? #reefsquad

Any ideas or suggestions?

Colin_1122 · Mar 30, 2020

how much flow are they getting? Mine did this when I first added them. I lost a few heads before I moved them to an area with higher flow but they’re doing better now.

EakTheFreak · Mar 30, 2020

@Colin_1122 They get decent flow, they are in a lower portion of the tank. I have Bob Marley Zoa’s right next to them that are all open.

kireek · Mar 30, 2020

How long have you had these zoas? It could be a parasite or maybe they don't like the water parameters.

EakTheFreak · Mar 30, 2020

@kireek I’ve had them for about 2 months. What type of pest would you think? Also, how could I treat?

Water Parameters
Salinity - 1.025
Dkh - 9.0
phosphate - 0.05
Nitrate - 15 ppm
Calcium - 425
Magnesium - 1300

vetteguy53081 · Mar 30, 2020

Try blowing across them gently with a turkey baster.
Also add a little iodine to the water

kireek · Mar 30, 2020

Zoa eating nudibranches would be what I would look for.

https://critterguide.ca/zoanthid-eating-nudibranch/
It looks like you have adequate Nitrates in your aquarium.The rest of your parameters look good.The only thing that I would worry about is your KH. Some zoas prefer a lower KH . Has this number been consistent ?