when I say 'tree', I mean the plant's growing style ... 'tree', to me, is just a plant left alone to grow as it wishes, usually like a Christmas tree ... you can flip to 12/12 hour flowering cycles at any time you choose, but the plant indicates maturity when the stems start alternating (instead of being paired straight across from the other side) ... also, remember that C99 can double/triple her height during flowering ... she is generally a light feeder ... she has a reputation of liking her magnesium, but I never added any more than a quality flowering fert (I use Fox Farm Tiger Bloom, etc.) ... I don't trim fan leaves, etc., unless they are blocking too much light ... I prefer bending them out of the way, instead ... and, yes, Joey Weed is the MAN ! :thumbsup: ... good luck :thumbsup: