I did my 1st 6 hour dark period, fed about 3 hours before the lights went off, 1 five minute feeding in the middle. 2 of the plants turned their largest leaves (1st set) up like a V. Is this ok.... I read somewhere that it is, but I figured I'd just ask the ? They're were at about a 45 degree angle and have gone back down a little in the last 3 hours.

Also, do the cotelydons fall off? If so, what does this process look like? One of them on my tallest plant is covered by the 2nd set of leaves and is turning yellow.