lps spacing and quantitys

[Jej34]

Guys,
Not sure how much these lps grow. As you can see, I've just added frags to my 9 month old tank. I want to keep adding but I'm not sure on how much is too much. I have 8 frags and 2 softies so far ( yes sps up top is not doing well, new purchase this week) :(
Can i keep adding and filling in?
Not sure how big these get if/when they colonize.

 

[Wall Street Reef]

This explains quite a bit LPS tank. You've got plenty of room;)

 

[Jej34]

In deed it does! Beautiful!