220 - 240 volts

so the bulbs, the glowing liquid and the blacklight poster sudah sampeiii....and i also bought the voltage converter to connect the bulb from the power source, after two trials sudah arah ceiling ended up melatup (siyaal banaaa~) rupanya the bulb can only afford 120 volts, yatanah dulu kana ajar Physics biar lukis-lukis buku....but the problem now is that the room is still abit bright for the bulb to be really effective...should i paint the wall dark? hehehe