Hey thanks for the info and the fast reply =) those kits look good, also they are similar to some i found online on a shop based on my country (They sell aquarium related stuff) i haven't ordered yet because of the reflector size, they seem very narrow just like those at AHsupply.com, compared to fixtures i've seen on growshops, for example ->these<- ones look great, one measures 38cm x 58cm and the other measures 47cm x 58cm, they seem though a bit expensive thats why i was thinking about the diy way =P.