How long?

How long does it take for the plants to become sturdy, like a centimete in the diameter of the stem?

It shouldnt taketoo long.Keep a good oscilating fan on your plants constantly,this will help your plants develop strong,sturdy stems. :eek:

would a reglar house fan work if it was on low?

Yeah, that'll work.

yeah a household fan is ideal....but dont point the fan directly on your plants mate...bounce the air flow around the plants and success will come..after a couple of days you should be able to notice a slight difference..good luck with the grow... ;)

I am just curious how long it usually takes from when the plant sprouts untill you see the first set of 5 or 7 pointed leaves? :confused:

most strains show thit pattern.first set of single round, followed by set of single pointed. then they get a set of three, then five, then seven. some strains will keep going up to eleven.

how long wil it take between each set?

depends on many things. if your plants are at their peak of nutes., getting 18 hours of light, and have plenty of air to breath they may get a new set at least every day. i've seen a plant grow a couple inches a day with two new sets of leaves a day under optium conditions.

my plants grow about 1 thru 2 inches a day, but no new leaves have came yet.