Hello Florian,
You can use 1 Chihiros A1201 Plus, it is 130 W, 8000 K, with 19.200 lumens
And 1 Chihiros A1201 A-Series, it is 65 W, 8000 K, with 9.700 lumens
So you already have 195 W, 8000 K with 28.900 lumens.
This lamp really bright, becarefull with algae bloom.
Regards,