Zoas look like over inflated tires?

[Joshb757]

They’ve looked like this for about two or three weeks. The same couple of polyps. Everything else in my tank seems to be thriving. I run biomedia, chemipure blue, floss. I feed fish Monday, Wed, Friday, and lightly on Saturday. Coral is target fed coral frenzy with rods food Monday/Friday.




water parameters:
32g
Salinity 1.026
Ph 8.0
Alk 10.0
Calc 435
Mag don’t have tester
Nitrate 10 ppm
Phosphate 0.06

 

[Reefer5640]

Following

 

[PBnJOnWheat]

They’ve looked like this for about two or three weeks. The same couple of polyps. Everything else in my tank seems to be thriving. I run biomedia, chemipure blue, floss. I feed fish Monday, Wed, Friday, and lightly on Saturday. Coral is target fed coral frenzy with rods food Monday/Friday.




water parameters:
32g
Salinity 1.026
Ph 8.0
Alk 10.0
Calc 435
Mag don’t have tester
Nitrate 10 ppm
Phosphate 0.06

Interesting because you have tons of other ones and they are fine, notably those seem to be in the center so we’re those the OG ones from that colony? Like the first ones or the oldest, maybe they’re just super happy idk following for an actual answer lol

 

[blasterman]

Most of the zoas in that picture are getting too much light. Gobstoppers and the nirvannas in the upper right should stretch a bit. Not lie flat or bow upwards.

If your nitrate has been climbing it will make zoas light sensitive.

The high light won't hurt them, but over a long term they will shrink in size.

 

[littlebigreef]

You'd wanna research 'umbrella effect' or 'umbrella syndrome,' I don't know that there's any consensus on what causes it.

 

[blasterman]

Yeah there is....too much light or a sudden increase in nitrate. I grow a lot of gobstoppers and have sold more. They should grow in oval balls along with the nirvannas in the upper right. Not encrust on rocks hiding from too much PAR like they are now.

 

[Joshb757]

Yeah there is....too much light or a sudden increase in nitrate. I grow a lot of gobstoppers and have sold more. They should grow in oval balls along with the nirvannas in the upper right. Not encrust on rocks hiding from too much PAR like they are now.

I dosed brightwell neonitro 3 weeks ago!