Sh4kiNBabi3S
- 10
- 3
Hello everyone,
So I am running a 4ftx9ft tent with 3 Barney's farm Pineapple Chunk plants and it is currently in the middle of week 2 flower. I am running 1 spider farmer sf4000 and 2 spider farmer sf 2000. All of which are approx 24inch from canopy. I have mainlined and SCROG this grow. (Even though it didn't fill out as much as I wanted without a super long veg) I run the foxfarm dirty dozen @ 1/2 str every feed. And water with molasses on the water days in-between. Both Ph between 6.3-6.5. For ventilation I am running 1 AC Infinity 6inch exhaust with a 6inch air filter, as well as 1 6inch intake fan to supply new air into the tent. I also have 2 6inch round fans that are at soil level blowing air across the tops of the pots/right under canopy as well as 1 16inch oscillating fan that oscillates across the top of the canopy. My standard tent rh is only 40% during this season so I run a humidifier to bump up the RH. I also have a large dehumidifier for when it gets too high.
So my question is this. My grow tent is between 75-80° at most and I was viewing a VPD chart and notice that if your room is around 75-80°f then your rh should be around 70-75% to keep the VPD between 8-9. (From what I understand a VPD of 8-9 is ideal for cannabis) So with all the air circulation inside the room and the high rate of air exchange between tent and outside room, should I have an issue with PM or mold or anything? I read PM and mold thrive in temps around 68-72 and much above that and the spores don't propagate properly. So with that, plus the air circulation and exhange I don't think I should have an issue. I just wanted to run it by the people here who have much more experience than I in an attenpt to get some good advice.
Any information, either actual studies or anecdotal experiences with information about this would be really awesome!!
Also, I have attached some pictures for reference although I don't think pics will do much for this issue. However any other advice if anyone notices anything in the pics please let me know. Side note: The plants had a small nitrogen Def but it has since been corrected.( Hense the few lightly colored leaves on the bottom of the canopy.
And lastly, as for it not filling out the way I would have liked without a longer veg cycle. On my next run I plan to take 6 clones from the mother of these and allow each a 2ftx2ft area( 2deep x 3 wide) 4ftx6ft total, which will also allow room for the dehumidifier and humidifier inside the tent. While at the same time allowing me to top and keep a relatively short veg time of around 4-5 weeks to properly fill out. Does that sound about right?
Oh one more note. I obviously did abit of a lollipop pre-flower and intend to do another defoliation in 2 weeks when it will be 4 week flower to improve air penetration/circulation.
Really appreciate any advice anyone can give on this issue.
"Forgiveness is divine, but never pay full price for a late pizza."
-A Wise Man
So I am running a 4ftx9ft tent with 3 Barney's farm Pineapple Chunk plants and it is currently in the middle of week 2 flower. I am running 1 spider farmer sf4000 and 2 spider farmer sf 2000. All of which are approx 24inch from canopy. I have mainlined and SCROG this grow. (Even though it didn't fill out as much as I wanted without a super long veg) I run the foxfarm dirty dozen @ 1/2 str every feed. And water with molasses on the water days in-between. Both Ph between 6.3-6.5. For ventilation I am running 1 AC Infinity 6inch exhaust with a 6inch air filter, as well as 1 6inch intake fan to supply new air into the tent. I also have 2 6inch round fans that are at soil level blowing air across the tops of the pots/right under canopy as well as 1 16inch oscillating fan that oscillates across the top of the canopy. My standard tent rh is only 40% during this season so I run a humidifier to bump up the RH. I also have a large dehumidifier for when it gets too high.
So my question is this. My grow tent is between 75-80° at most and I was viewing a VPD chart and notice that if your room is around 75-80°f then your rh should be around 70-75% to keep the VPD between 8-9. (From what I understand a VPD of 8-9 is ideal for cannabis) So with all the air circulation inside the room and the high rate of air exchange between tent and outside room, should I have an issue with PM or mold or anything? I read PM and mold thrive in temps around 68-72 and much above that and the spores don't propagate properly. So with that, plus the air circulation and exhange I don't think I should have an issue. I just wanted to run it by the people here who have much more experience than I in an attenpt to get some good advice.
Any information, either actual studies or anecdotal experiences with information about this would be really awesome!!
Also, I have attached some pictures for reference although I don't think pics will do much for this issue. However any other advice if anyone notices anything in the pics please let me know. Side note: The plants had a small nitrogen Def but it has since been corrected.( Hense the few lightly colored leaves on the bottom of the canopy.
And lastly, as for it not filling out the way I would have liked without a longer veg cycle. On my next run I plan to take 6 clones from the mother of these and allow each a 2ftx2ft area( 2deep x 3 wide) 4ftx6ft total, which will also allow room for the dehumidifier and humidifier inside the tent. While at the same time allowing me to top and keep a relatively short veg time of around 4-5 weeks to properly fill out. Does that sound about right?
Oh one more note. I obviously did abit of a lollipop pre-flower and intend to do another defoliation in 2 weeks when it will be 4 week flower to improve air penetration/circulation.
Really appreciate any advice anyone can give on this issue.
"Forgiveness is divine, but never pay full price for a late pizza."
-A Wise Man
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