Det fanns både en bra del för och nackdelar, läste en nackdel till om dem:
"One problem with the electronic ballasts is that they often have to be tuned to the specific bulb or classes of lamps. This may be a problem if you want to change from say a US made lamp to a German or Japanese lamp, since it requires sending the ballast back to the manufacturer for re-tuning."
http://www.personal.psu.edu/faculty/s/b/sbj4/aquarium/mh/mhlighting.html

Vad tror du om det?