Green Bubble coral doesn't look well

[puks]

Green Bubble coral is the only coral in my tank that doesn't look well. All water parameters are fine and I do water change once per week.

 

[KBennett]

How close is that favia??

Could be getting attacked.

 

[puks]

2.5". But it started to shrink from other side.

 

[puks]

I've moved it to another place to check your theory.

 

[spyd]

How much flow is it getting? The lower the flow, the better.

 

[puks]

Yes. I know this. It's in a bottom of the tank and the flow is low.

 

[Boga]

How long time ago started to be like that?
Did you feed it after lights out?

 

[puks]

Started sever weeks ago.
No. I don't feed when lights out.

 

[Boga]

Started sever weeks ago.
No. I don't feed when lights out.

Not promising
Sorry. I should have asked if you did feed it at all.

 

[puks]

Yes, I feed all my corals.

 

[Boga]

Thanks. I was asking you because I lost one after I stopped feeding it.

I hope yours will get better.

 

[puks]

I'd like to clarify. I don't feed separately each coral. Every day I introduce a frozen food and twice a week Phytoplex and Oyster Feast. I think it should be sufficient and all other corals feel good. This coral was fine for a several months. Don't know if it's important or not: the rock it's located on is the only one that has kind of moss.

 

[Boga]

OK. My bubble coral was not ready during the day for feeding. It was ready (tentacles out) after lights out.

In your case, if it does not get better after this move, I would try spot feeding with a turkey baster, when you see tentacles comming out for food.

 

[puks]

Thanks Boga. It makes sense. I'll see couple days and try to feed after lights out.

 

[Boga]

I don't think that the green algae on the rock would affect the coral. It looks like hairy algae to me. Does your foxface eat that algae? Trying to make connections. Maybe the bubble got stung by the fish's spines?

Do you have any other fish, shrimps or crabs?

 

[puks]

Didn't see the foxface or any other fish eats the coral or this algae. Foxface doesn't swim in the place I put the coral. Will see if it help. Foxface was introduced at the same time as the coral and I didn't see any problems for several month.

I have:
- Foxface
- 2 clawns
- Royal gramma
- Yellow Watchman Goby
- Peppermint and cleaner shrimps
- Golden Coral Banded Shrimp
- Red leg hermit crabs
- Tiger Pistol shrimp
- Nassarius snails
- Astraea snails
- Anemone crab
- Conch

Couple weeks ago I saw during 2-3 days the red leg crab on it.

 

[Boga]

Quite collection of shrimps you have there

I would suggest, if you can, to check the coral during the night, so you can see if anything else is bothering it. If you have a sump or refugium, I would move the hermits (for a while), just to take this variable out.

I hope it will get better.

 

[KBennett]

When you do target feed it, you'll have to distract the shrimps with food.  Otherwise, they'll steal it from the coral.

 

[puks]

I'm going to set something around to prevent anyone from bothering him.

 

[puks]

What's better to feed: brine shrimps, Phytoplex, Oyster Feast?