Hej,
in a german forum some people are using “Kaltlichkathoden” (Kaltljuskathoder ?) to light their aquariums. I am wondering if anyone here has tried this as well ?
Those things are used for “modding” computers as far as I know. They are really cheap (twin set, 10 cm each for €6,50) and apparently give good enough light for moss to grow nicely.