Jam, you are supposed to have at least 32PARwatts per ftsq.

This will prevent excessive stretching of internodes as all plants will be provided with sufficient light energy so plants will develop buds rather than growig tall.

hps light has 30%PAR efficency, so 1 sq ft must be lighted by 97watts hps. For best results you must goal for 42 PAR watts per sqft which is 126watts of hps light per sqft.

Your plants got streched because that light in the cupboard is insufficient for that qantity of plants, if you don't wish to improve lighting then you should consider growing 3-5 plants.
cture Reviewed by cture on . Small SOG - questions, help! Okay, here's a pic of a SOG experiment. I normally use ScroG, but thought I'd play around some with a sea of green, see how it went. There are 24 plants in there (in a 46"x20" space, 3.75 plants per square foot). The strain is Nirvana AK-48 and it's on day 31 of flowering in this pic. They are in 24 separate 1/2-gallon square pots. Question: is this normal? Look how freakin' big they are! I pulled out a ruler and measured last night, and they are about 33" tall, not counting the pot, about Rating: 5