Hey Mand I was just reading through your grow here and noticed this.

"I read in my little book when I first started growing that a 400 watt MH would provide 30,000 lumens which is enough to cover an area of up to 35sq feet, well my grow area is around 36sq feet, so thats close enough for me"

Most 'experts' suggest that the minimum you need for minimum growth is 2000 lumens per sq/ft. Better to have at least 5000/sq/ft. Best to have 7500/sq/ft. If you have 36 sq/ft of grow area (which would translate into an area 6 feet x 6 feet) you'd need, as a minimum 72,000 lumens, better to have 180,000 and best to have 270,000. You have about 833 lumens per sq/ft. FWIW

That said it looks like you've been fairly successful in your grows so this may not mean a thing. Just thought I'd comment on this.