Gsp help

[J2thefree]

So I got some green star polyps about 10 days and its been great out and flowing around now I come home from work and half of them are closed up and the other half look like this the only thing I did different is remove a sponge that I put in my filter and added some chaeto cause my nitrates were going up am I killing it? I tested the water and everything is practically the same the only thing different is calcium is down to 420

 

[bskerrichard27]

Looks fine to me.... How big is your tank

 

[J2thefree]

29 gallon biocube but you see how the heads aren't fully open

 

[Cichlid-dude]

Something may have pissed it off. Mine get brushed by a fish sometimes and stay closed up for a day or two. If all your params are ok i wouldnt worry about it.

 

[bskerrichard27]

Mine do that some times if my condy touches them they stay closed for a day or two then open back up