how many frag at a time

[rs30]

I have a 90 gallon it's been up and runing for 12 weeks rock i add was 6 plus year old. can i add 5 to 6 soft frag at the same time like zoo mushrooms ,lethers my light are ai's Thank?

 

[125G Reefer]

If all your parameters are in line, that should'nt be a problem with having mature Live Rock.