Zoas won’t open (pics included)

[Thatgirlnyx]

I have had these zoas for 10 days - they were open the first week looking really good (they were dipped with CoralRx before going into QT) but they won’t open the past three days -( I included a pic when they were open too ) - Parameters are 1.025 ppm, Amm 0, Nitrites 0, Nitrates 0 - ph 7.8 - no changes in lighting or flow - I have a few trochus snails in QT that do crawl on them sometimes

 

[Nick Steele]

Tanks not dirty enough for them. Raise your nitrates and phosphate above 0

 

[Mr. Mojo Rising]

Zero nitrates... QT tank is not a good environment for corals

 

[Tahoe61]

What type of lighting? What type of flow?
I have no fish or inverts in my tank and my zoanthids are open.
If your QT tank doesn't provide adequate lighting and appropriate water chemistry for corals, alk, cal....The zoanthids will close up.

 

[Thatgirlnyx]

Update: whole colony goner - found zoanthids eating spiders all inside the last hold outs - I got these from saltwater aquarium.com