I've had a small frag of zoas or maybe palys, not sure I'm kind of a nube, for about a month. I recently switched lights and ever since they have been closed for the most part and string like things aren't growing off the base, not the actual polyps like they do when expelling waste. I have a green star polyp that is doing well so I'm not sure what is going on. I've tried removal and it comes back. Parameters are normal 1.025 salinity 5.0 nitrate (water change soon) usually 0, 0 nitrite and ammonia 7.6 ph