any way to get more L ports?

[StarF]

Hi

I am using all my L1-6 ports, is there any way to get more? i own a ghl 3 ex.

on my L1-2 i got 2x tunze 6055, and on my L3-4 and L5-6 i got my Pacific Sun Led lamp, how ever i would like to add 2 more Tunze 6055 and control them aswell, how do i do that?

[Blahenazo]

expansion cards plm 2L or PLM 4L