Okay...24/7 means lights on 24 hrs a day 7 days a week (lights are never turned off)....It is confusing as 18/6 means 18 hrs lights on and 6 hrs lights off in a 24 hr period.
Good friend of mine does 20/4. They grew very quickly and when he switched to flowering 12/12 all 11 plants were flowering and showed sex identity within the week. He got 6 females, 4 males and one went Hermie down the road.
Okay...24/7 means lights on 24 hrs a day 7 days a week (lights are never turned off)....It is confusing as 18/6 means 18 hrs lights on and 6 hrs lights off in a 24 hr period.
Plants need the dark period. There are certain things that happen to the plant in complete darkness that cannot happen if 24/0 is present. Nature has a dark cycle, nless you live in Alaska It may "grow" faster in veg, but when flowering comes its not ready to revert.
This may lead to longer flowering or less bud (if 18/6 was there the root mass would be bigger/bigger stems/supporting bigger nuggets)
correction, plants need a photoperiod to induce flowering.. 24 hours hid light for veg works wonders for me, called perpetual growth, using an sog method, clones sit under same light as the vegging plants, 250mh, then when they're over 60cm (strain dependant) i throw em under a growzilla with 400mhand a 600hps uvb enhanced. i'll post some pics of the new setup soon.