Hey mate, just saw your journal and thought WOOHOO someone doing the same thing I am on a budget! I think not going cheap on the light was wise, I am on a tight budget also and cant afford to pay the street prices for average weed. And me and my gf gotta smo)ke ya know =)
Anyway I saw the Amnesia.. I wanted to show you my auto-flower. Its Northern lights auto from Sensi seeds, I dont know why its done this well I have only feed it once with some basic organic stuff i bought.. (I dont speak the laungage where I live so I just guessed with fertilizer lol)
One thing I will say is I have my light ALOT closer as in...
Big plant is on day 34 little one is on day 15 i think.
Its about 19 cm away from the top, and it has grown about 4 cm in 24 hours =) no light burn..
Just my opinion, but I would lower that light, water when the pot is as light as a feather, and go so easy on the fertilizer its like your not even feeding it, also I am running 24 hour straight light just to try and speed things along =)
Hope this helps, loved your carbon filter, I did the same thing, but then thought....f%#k it I like the smell =)