to bio-pellet or not to bio-pellet

[saltyair]

Have been looking into a bio-pellet reactor and doing some research.

Wondering if it would be helpful or an unnecessary expense.

I don't have bad algae
I do run carbon and gfo
I have a well established refugium
I do run an over sized skimmer

For the last 6 months my parms have not changed much other than PH.
I dosed to raise the ph with aquavitro eight.four. It has been successful.
my ph is now steady @ 8.3 (testing before lights out)
no3 - .5
kh - 9
ca - 420
po4 - 0
mag - 1340

would adding a bio-pellet system add anything to my system to help coral growth and health?