2 of my corals aren't opening up. They haven't for about a week now. (Fruit loops and magicians). Ive had them for about a month to month and a half. Fruit loops had 2 polyps now has 4 and my magicians went from 8 to now 12. I'm not too sure what it could be. Tank has 15 corals, an rbta and no fish. Just tested my water. Any feedback would be appreciated.
Calcium 460
pH 8.0
Nitrate 40 (high!)
Nitrite 0
Ammonia 0
Salinity 1.024
Temp 78.7*
I don't have a magnesium or strontium test kit. If it matters I will go get one. I did a water change 2 weeks ago. So its about time for another one. The rbta hasn't moved and hasn't been close to these 2 corals so I know not stung
Now that I'm fishless cuz if ich, I do have a lot of pods that roam the tank. They do crawl around on these corals. But they do on all of them and the other ones don't close