Not flowering plants, one month 12/12

[lightmove]

Hi everybody!
Again I am having problem. My plants are 4 weeks into 12/12 regime, but signs of flowering are minimal. Plants are very high, about two meters, the plants are reaching ceiling now. Plants are growing constantly. Room doesn't have light leeks. When watering and main lights are off I am using green incadescent lamp. Do you have any ideas what is wrong?

How long has this problem been going on? Four weeks
What STRAIN are you growing? Fruit spirit, Silver Haze
What was the establishing technique? (seed or clone?) Seed
What is the age of your plants? Three months
How long have they been in the soil mixture they are in now? 4.5 weeks hydro, 2 months soil
How Tall are the plants? 200cm (78 inches)
What PHASE (seedling, vegetative or flower) are the plants in? flower to 12/12 during last month
What size pots are you using? (Include how many subjects to pot) 7 liters (1.9 gallons)
What substrate/medium are you using? What brand of soil mixture are you using? peat substrate and 25% perlite
What Nutrient's are you using? Advanced Hydroponics of Holland, Grow (25-12-50), Bloom (00-50-35), Micro (45-00-10)
How much of each nutrient are you using with how much water? Grow - 0.5ml/liter, Bloom 1ml/liter, Micro 0.5ml/liter
How often are you feeding? once in 4-5 days
If flowering, when did you switch over to using Bloom nutrients? when chinged light to 12/12
What order are you mixing your nutrients? I've mixed both veg and bloom without considering the order
What is the TDS/EC/PPM of your nutrients used? EC - 0.8 mS/cm, 400ppm
What is the pH of the "RUN-OFF"? 6.3
What method of pH test was administered? pH tester - Hanna
How often are you watering? When soil is dry about half inch below surface (2-3 days)
What size bulb are you using? 2 HPS lamps 600W each
What is the distance to the canopy? almost reached ceiling(6 feet)
What is your RH Factor? (Relative Humidity) 40%
What is the canopy temperature? Unknown.
What is the Day/Night Temp? (Include fluctuation range) Day 20-22 degree celsius (68-71.6 F), Night - 20-21 C (68-69.8 F) using air-conditioner when lamps are on
What is the current Air Flow? (cfm etc.) 150 CMH (88CFM)
Tell us about your ventilation, intake exhaust and when its running and not running ? Constantly runnig, grow room is into another room
Is the fan blowing directly at plants? Yes, oscilating fan, low speed
Is the grow substrate constantly wet or moist? Yes
Is your water HARD or SOFT? Soft, pH 7.2
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap water, pH adjusting after mixing of nutritients
Are you using water fro m a water softener? No
Has plant been recently pruned, cloned or pinched? No
Have any pest chemicals been used? If so what and when? None
Are plant's infected with pest's? No

 

[HeadyPete]

Say hello to growing Sativas....

 

[Core]

i for one belive your feedingscedule is all wrong....advanced is best used for coco....although it can be used for soil....but not as the bottle says...
i do see some great damage on ya leaves ..Just don't see pix of them....
Nway take a peek on what you should give'm.....ohw yea and the scedules says to 1/2 the dosage for soil......but you should't follow that rule completly !!
this is scedule i got from them by mail....

 

[dbfr3sh]

ouch your F/ed to say the least with those. no way can you finish that silver haze with your height restrictions now, unless you soak the soil and try to bend the branches down a lot, mayb the shock will get things started. nice big plants and enjoy watching them flower for the next 3months.

 

[lightmove]

HeadyPete I know sativas are high, but I have bought seeds for indoor growing. Are you sure that sativa genes are causing the problem?

Core i have this feeding chart. I feed plants according to chart (beginning of flowering), 1/2 dosage for soil. Do you think that more bloom fertilizer will speed up flowering? Yes there are some damaged plant leaves. There was nutritient deficiency, may be still is. I was described this into this thread: http://icmag.com/ic/showthread.php?t=111323

dbfr3sh bending of branches is good idea. Some leafs have burned from lamps, until I moved most higher plants away.

May be not flowering is caused by nutrition problem? I am just guessing...

 

[crankndapot]

4 weeks no flowers yet. damn..
i highly doubt its a nutrition prob, they are looking pretty healthy from what i can tell.
i knew sativas take a long time to finish, i did not realize they take a long time to start flowering as well..

o i see they are still growing... well, its def the genetics then. i guess they just havent done stretching yet. good luck taming those beasts.

 

[jonnybgood29]

try dropping lights down to 11 hours... ive had plants that would not flower at 12/12. ive even had to drop to 10 hours light before. also look for light leaks with lights off. even a little light leak can prevent flowering. have you checked to make sure the lights actually go off when you want them to?