Why is one shorter than the other?

[Notsolostfish]

Iv had this torch for quite a while, i noticed it has been doing a big split, however its smaller than the other ones, when i first got it, it was bigger, and more extended than that. It does look healthy, just different and smaller than the other. Is that a normal thing they do when they split?




Tank is 1.5 years old.


Alk:9.9
Cal:460
Mag:1410
Phosphate:0.2
Nitrate:8

 

[KrisReef]

They do what they like and these look happy.