steve kelley
Member
How tall should I let my plant get before I flower them, to get a good yield? 3 of them (female seeds grapefruit) are 23 inches and 6 of them are 16 inches.
How tall in veg under a 400HPS and a 6ooHPS before flower????
- Thread starter steve kelley
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FatMarty
Well-Known Member
It depends how tall your ceiling is and the amount of light on the side; but generally plants will stretch 100% to 200% once you switch to bloom.
So typicaly a 26 inch tall plant will be 50 to 60 inches tall two to three weeks after flipping.
I'm growing a couple now that easily stretched 300%; so the rule is only general in nature.
If 50 to 60 inches tall is too tall for your area look up LST, which stands for Low Stress Training.
So typicaly a 26 inch tall plant will be 50 to 60 inches tall two to three weeks after flipping.
I'm growing a couple now that easily stretched 300%; so the rule is only general in nature.
If 50 to 60 inches tall is too tall for your area look up LST, which stands for Low Stress Training.
$waGgEr
Active Member
also look into topping
steve kelley
Member
They have already been topped, I was going to wait till the 6 smaller ones that are around 15 inches now, get to 17 inches then flower, I have 8 foot celling.
FatMarty
Well-Known Member
Well it sounds like you should be fine then.
Good luck Bro.
PJ Diaz
Well-Known Member
28 to 30 inches?? Try 12 to 18. FAIL.
SirLancelot
Active Member
from my experience my plants grown under a 400w hps grow 80%-140% after switching to 12/12. But thats just my set up. basically double in size give or take 6"
SirLancelot
Active Member
I keep my 600w about 12-14" away from canopy but I also don't have any heat issues it stays at 74-75 at canopy.
JASON79
Active Member
for the best result
you need to get the whole canopy the same level a week before flowering
topping more if the strain takes well to topping
lst of lifting some of the pots up
most of the buds will grow on the top 12" of plant closest to the light
so if one plant is 6" higher than the rest, you will lose a lot of your yield
SirLancelot
Active Member
Aren't you concerned with the major blow the floral hormones in the plant take once there topped? it can take up to a month before they are back to full power again. If they don't have time to get healthy again you'll experience diminished yields.
I didn't read how you were growing. You must also take into consideration what the containers you are growing in are stressed for. My current grow in NFT tubes. I needed to flip at 1 foot or under. I didn't. Take a look at my journal and you'll see where my largest plant fell into the tube. I'm going to lose all internal buds.
JASON79
Active Member
(that why i said if the plant takes well to topping)
and that's why i said 1 week before turning to flower
and then it takes 2 weeks to start flowering, so if this slow the stretching you get in the first 2 week of flower it can only be a good thing.
if he has a uneven canopy, this will reduce yield
steve kelley
Member
They are in soil and 4 an a half gallon pots
JASON79
Active Member
this is a good pot size if you can give the plants extra veg time i top and lst the plants
try to keep them short and get a large root mass there and you will be very happy with the yield
1 of my plants is 3ft x 2ft 30 inches high and min 30 bud sites at same height, 8 gallon container full root mass could of used a bigger pot
i will get 6-10 oz off this one
root mass in soil reflects your yield 1 gallon to 1 oz
in those pots you could pull 3-4oz each if grown right and get the root mass in
if you can keep the lights round 18-20" from plants, the buds mite not be as dense
but you will have larger foot print and larger yield
it would be good to find out more about your strain as some need to be closer to the light
but if yours is like mine critical mass i can have it 24" from plants large footprint dense buds and very large yield
steve kelley
Member
I am keeping my 600hps about 13 inches above the plants and my 400hps about 10 inches from the tops,I have thought about flowering the taller plants under the 600HPS and the smaller ones under the 400hps, I will just raise 2 of the plants, so I will be flowering 5 under the 600 and 4 under the 400, sound good?