Encrusting montipora growth?

[AC1211]

How fast does encrusting montipora grow from a frag?
I have 4 LPS frags in this tank for 7 months and 0 growth but they are surviving so I thought I would try this to see some growth.
Should I expect growth or is not getting LPS to grow a bad sign?

 

[ReefReadyYouTube]

It should have grow in 7 months. Do you dose any supplements for them!

 

[AC1211]

It should have grow in 7 months. Do you dose any supplements for them!

Yes tropic marins all for reef to keep params in line and I feed either mysis or reef roids target fed once or twice a week.

 

[ReefReadyYouTube]

Yes tropic marins all for reef to keep params in line and I feed either mysis or reef roids target fed once or twice a week.

Then it’s probably the light. What do you have?

 

[AC1211]

Then it’s probably the light. What do you have?

I have a radion gen 4 xr30. Could it just be that 1 or 2 headed lps frags just grow slow maybe. I mean would it not take a lot of energy for my 1 headed torch, 1 headed duncan, 2 headed candy cane, and 2 headed frogspawn to grow?