Thanks bluebear & xcrispi for the input. We've got about 600GBP/1000USD to kick start a growroom, we've priced up other stuff, extraction, ferts, fans etc etc etc, it's just this lightin and the different opinions on ferts that's crackin my head up. And to finish of this cold horrible day, i have just crushed one of my little seedlings trying to take a picture.. gutted