Hi, well I woke up this morning & 3 of my plants were 1 1/2 inch skinny stems, im kinda chuffed, they have 2 like round leaves & 2 cannabis shaped leafs, very tiny though.

I'm using 18/6 at the moment is this ok?
Also how long can they survive without water? ... sometimes I can't be around all the time.
Thanks Dude0


I forgot to add... no its a 250W HPS light, I bought it from a hydroponic shop.