i think you should try a different bulb like philips son-t or master son-t.after 30 days your plants should be well ready to go on to flowering light.metal halide only gives out the colours of summer and is not ideal for flowering son-t bulbs are high pressure sodium and give out the colour of autum the light the plant needs to create optimum buds.i usually only veg my plants for 2 weeks. i use huge pots with miracle-gro soil and usually work out with 2 to 3 oz per plant trust me more root space more bud.