rose bubble tip help

There are a lot of different theories on this. One of mine was bubbly under led on a short tank but is long and straight under t5 & mh in a 24" deep tank.
 
My rbta is under led lighting . Sometimes it's bubbly but most of the time it's tentacles are stretched out.

Nick b
 
I have heard both of these completely different theories
1. They bubble in an effort to shade themselves in high light situations, and don't bubble to open up more body surface area in low light.
2. They bubble in an effort to expose more body mass to light in low light, and have thin tentacles in high light to expose less flesh to light.


Totally oposite theories. Pretty sure nobody has any clue as to why this actually happens. Lol
 
Forgot to add , my rbta is pretty close to the top of my tank so it's getting plenty of light. I can adjust both the blues and the white led to provide optimal lighting for the rbta, just need to know the right combo.

Nick b
 
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