Button Polyps not extending

hellbob · 10/18/2009, 09:19 AM

Hi,

Most other corals seems fine but I am worried about the button polyps. They're not extending their "tentacles/feelers". They open so that they're round and their trunks extend.

All water parameters seem fine. Kh is a little low at around 7.5 - 8.0. but I will be fixing that today. Salinity is 35ppm (refractometer). Ph is 8.1. No measurable phosphates or nitrates (using the zeovit system). I have about 300w MH on a 55 gallon.

I moved the button polyps into a shaded area thinking it was too much light but they've been there for about 1 month and still the same behavior.
All other corals appear quite healthy with good polyp extension.

Is this normal for button polyps? Thought it could be that the water is too low in nutrients but not sure..

Help would be appreciated.

Thanks
-Robert

Percula9 · 10/18/2009, 09:59 AM

Post a pic of the polyps.

10/18/2009, 09:19 AM	#1
hellbob Registered Member Join Date: May 2009 Location: Rhode Island Posts: 27	Button Polyps not extending Hi, Most other corals seems fine but I am worried about the button polyps. They're not extending their "tentacles/feelers". They open so that they're round and their trunks extend. All water parameters seem fine. Kh is a little low at around 7.5 - 8.0. but I will be fixing that today. Salinity is 35ppm (refractometer). Ph is 8.1. No measurable phosphates or nitrates (using the zeovit system). I have about 300w MH on a 55 gallon. I moved the button polyps into a shaded area thinking it was too much light but they've been there for about 1 month and still the same behavior. All other corals appear quite healthy with good polyp extension. Is this normal for button polyps? Thought it could be that the water is too low in nutrients but not sure.. Help would be appreciated. Thanks -Robert

10/18/2009, 09:59 AM	#2
Percula9 Registered Member Join Date: Jul 2007 Location: Orange County CA Posts: 3,819	Post a pic of the polyps.