bubble coral help

[coolkidtr]

Hi guys, I have had my green bubble coral now for two weeks and I have moved it around in my tank to cater its needs. It opens fully in the a.m and closes partially in the afternoon evening. I am running T5's (50/50), My ph 8.3, Nitrates 0, Ammonia 0, Phosphate 0, flow is minimal, temp 80C, it is resting on the sand bed calcium 420, KH 10. I feed it cyclopeeze, phyto. Is this behaviour normal?
Cool

[cyclgrl]

Make sure it isn't getting too much flow. They like moderate flow.

[Micki]

Mine doesn't like much flow at all.

[thepudge]

Sounds totally normal, they shrink at night.. As long as it inflates its fine..

[shullat]

Sounds normal, they shrink during the ending of the lighting period and extend their tentacles for feeding.