please help!! did i force my plant into flowering

i had my plant for about 7 weeks indoor under fluorescent light. it was about 3 feet. i thought that was enough time before i move it into the flowering stage which i thought 12 hour light on and 12 off. but the next day my plants top was falling down and all the stems started dying out. and some of the leafs totally died. it was so damaged that after i left the light back on for 18 hours on there was no difference. when i squeezed the main stem it was soft and the color turned to grayish. it was like there was no juice in it if u no wat i am trying to say. so i wanted to know if that was because of my light change or was it something else. i do not want to make the same mistake again because i have 2 beautiful plants outside (AMS and haze) that are very healthy and 1.5 feet tall so far and when it is time to flower i wanted to take it inside and put it under a hps bulb with air ventilation out the window.. and is it true to leave the plant in dark for about 24 to 48 hours light off before changing the cycle to 12 on 12 off? any advice or tips.

Got pictures?

No, don't let it sit in dark for that long, that will just stress the hell out of them and ruin them. You probably stressed them due to them vegging for a long time and dramatically switching the cycles soo fast, some plants don't respond to that well. What you should do is gradually bring the light regiment down every hour (30 minute increments, turn the lights on 30 minutes later than usual and turn them off 30 minutes earlier then the usual time and soo on...) just like season change... This will greatly reduce stress on the plant.

I highly doubt your problem has anything to do with flipping the light cycle. You must have a problem of some sort with your setup or something. The 24 or 48 hrs doesnt help your plants flower quicker, if anything it slows it down a tiny bit since it wasnt getting any light for 24 or 48 hrs, light=energy. So you'll just be giving it less energy to start the process with.

420BongRips said:

No, don't let it sit in dark for that long, that will just stress the hell out of them and ruin them. You probably stressed them due to them vegging for a long time and dramatically switching the cycles soo fast, some plants don't respond to that well. What you should do is gradually bring the light regiment down every hour (30 minute increments, turn the lights on 30 minutes later than usual and turn them off 30 minutes earlier then the usual time and soo on...) just like season change... This will greatly reduce stress on the plant.

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No disrespect, but I must disagree. Ive vegged many scrog plants longer than that and straight flipped to 12/12 and ive never had a problem with it. Ive also never seen anyone on here have any negative effects from going right to 12/12 either. Thats the best way to do it really. Otherwise your just wasting that time where it could of gotten 24/0 or 18/6 since it will still be vegging till you get down to 12-14 hrs a day. light=energy=growth. like i said earlier.

thnks everyone but i think i found the reason.. it wasnt the light change. i believe i watered it too much and thn left it under the light and it was pretty hot and close.. i relized it because the same happened jus today when yesterday it was like 90 degrees outside sun blazing and i watered my plant that i had outside (AMS and HAZE) with lots of water. and left it under the hot sun.. my plants outside was lookin perfect till i did this yesterday. the plants didnt fully die like it did with my plants that i had indoor. so i hope my babys dont die.. this is my first time so im not that mad.. im learning from my mistakes.. ill put up pics so this way i can be sure that is the problem.