Thanks for comments.
Scape is 3 months old.
Ferts; Nutrafin plant gro and easycarbo (product similar to excel) 1 drop daily.
I dont know water parameters. It's inportant to do daily wc in first 2-3 weeks to prevent algae blooms.
Homer, it's some chinese brand. I dont think that is bulb responsible for thread algae bloom. Yes it's coffee can modified to reflector.
I just redid this scape, HM growing to fast. New scape will be with moss only (few species).