I Need advice regarding bubble coral

[Lisa Cain]

I absolutely love bubble corals and I have two in my tank. During the earlier parts o f the day my large bubble coral the green opens wide, however it seems as if it is closing up more than what is used to do. It seems to close up more as the evening approaches. See picture where it is closing up. The smaller bubble coral stays open all day until the lights go out. I had the water tested today and the store said everything was fine including phosphate and Calcium. I have a 65 gallon Oceanview aquarium with T5 lights 3 white and 2 blue. At first I only had 2 white and 2 blue on. I recently turned on the other white bulb. As anyone seen this type of behavior in their bubble coral??? I feed it the small pink ship that you purchase in the pet store. I feed it once a week. Could it be the light?

 

[EeyoreIsMySpiritAnimal]

If you just increased the lighting, it could need time to acclimate. Is the one that you're worried about higher in the tank than the other one?

 

[Lisa Cain]

They are about the same distance. Actually the smaller one is a little higher.

 

[EeyoreIsMySpiritAnimal]

They are about the same distance. Actually the smaller one is a little higher.

Is there anything blocking the light to the smaller one, like a brace? If not, then my idea that it's the lighting is probably wrong...

 

[Lisa Cain]

Is there anything blocking the light to the smaller one, like a brace? If not, then my idea that it's the lighting is probably wrong...

Today is if doing fine. By staying at home and watching it I realize that it is full blown in the day and tries to go to sleep early. I tried to feet it but it was not hungry today. Thank you!! for your suggestions,

 

[EeyoreIsMySpiritAnimal]

Today is if doing fine. By staying at home and watching it I realize that it is full blown in the day and tries to go to sleep early. I tried to feet it but it was not hungry today. Thank you!! for your suggestions,

Glad it's doing well :)