Hey gunge, just a little edit to when to judge the start of flowering, don't forget to allow space for the height of your pot, sorry i forgot to mention that! Those lights look pretty good, i looked at them when i was getting my lights a couple of weeks ago but decided to get a 125 watt envirolite for £20 instead and they do a 200watt for £40, i just figured it would save me wiring up loads of cfls, i've supplemented with a couple of cheap 20watt cfls but you can get them for around a £1 each. Just thought i'd mention it if you didn't know about the enviro's

Peace :rasta: