No polyp extention from any soft corals?

[Laakmann]

I have 2 toadstools, 3 colonys of corky sea fingers, a large colony of GSP, , colony of white star polyps and a colony of zoas that is only half opened. None of them have opened for a week and a half, what could cause this?

Tank parameters are:

400ppm CA
11 Alk
1200 Mg (little low)
78 degrees
undetectable nitrate and phosphate
no idea on iodine and sulfates.

All of them are in a pretty high amount of light, 12-24in below the water with 2 250 watt DE 14000k lights and a 400watt 10000k in the center. They also have a good amount of flow, the gph in the tank turns over its volume 4-5x. And all are receiving indirect flow.



All my LPS and SPS show good polyp extension.

 

[Laakmann]

up, any ideas?

 

[graveyardworm]

Chemical warfare? Do you use Activated carbon? How long has everything been set up, when were the corals introduced, any other new additions?

 

[Laakmann]

I had an event about a month ago where the entire kalk tank drained into my main tank while I was on vacation. That killed alot in my tank, almost every invert (I tested for copper) and then all the acropora. Anyways 1.5 weeks after that I got all the parameters back to normal. The star polyp colonies I had before were closed up so I thought it was just because of the parameters and they were still recoving but when I added these new corals they all closed up fast.

I added a grounding probe and one of the leathers has shown signs of improvement but not all have.

 

[graveyardworm]

The large addition of kalk would result in a rapid ph change which would be responsible for the death of alot of stuff. I would just concentrate on keeping parameters stable and wait. I'm not sure there's much else you can do.

 

[Laakmann]

parameters are stable, pH is 8.15+ or - .1 and Ca and Alk have a drip system that replaces what is lost. I wouldnt think anything of it other than that new addition have the same symptoms so there must be something still wrong.