Homebrew PCBs

Hi All

I have got some fotoboard 2 pcb (Rapid electronics) and a
LV 202E Exposure box, the tubes are about 2" from the glass.

Anyone know how long to expose this make of board ?
Also i did a board the other day using fotoboard 2 (about 5 mins exposure)
and it came out crap, all the edges looked pitted and the tracks had what
looked like lines etched in them!!

I use ohp transparency film (www.5star.co.uk), and it is for inkjet
printers (Epson, Canon)
and my printer is the Epson R300.

Thanks
Howard