Zoa staying closed

[BabyShark]

This is an update on one of my zoa colonies. When I first got it, it was opening fine for a few weeks then suddenly closed. All my other colonies are doing fine except this one. Any suggestions?

 

[BabyShark]

SALT: 1.026
PH: 8.4
AMMONIA: 0ppm
NITRATE: 0ppm
NITRITE: 0ppm
Lighting scheduled for 8 hours from 12pm - 8pm.
Temperature is 77F

 

[vetteguy53081]

If running carbon, remove temporarily, observe for little black bugs, asterina stars and and any other pests.( check underneath plug also)
Give it peroxide dip for 5 mins and do add Lugols Iodine every other day to water.
Moderate water flow

 

[BabyShark]

Thanks!
I’ll give the peroxide dip a try

 

[DSC reef]

Do not add iodine to the water every other day unless you test for iodine levels, it's a good way to over dose your tank. Carbon will not hurt your zoas or your tank. Typically you want some nutrients in your tank for zoas. My advice, some zoas just don't do well and you shouldn't make radical changes that can affect your entire system for one frag. Anyone who grows zoas understands this frustration.

 

[Wayne P.]

I would check flow. I had a lot of zoa's not opening, changed flow, lowered it, and everyone is opening beautifully now.