CO2 buildup at night in sealed room cause fox tailing?
- Thread starter nxsov180db
- Start date
nxsov180db
Well-Known Member
Nope, no air exchange. Most sealed rooms aren't exchanging air unless they're using a co2 generator from what I understand, I'm using bottled co2.
Daino
Well-Known Member
OK I see what what you'd your peak levels be using the bottled co2 during lights on what would your co2 level reach?? That's the little issue with sealed rooms controlling oxygen/c02 exchanges, can I ask how come you went fully sealed room just curious is there a benefit to it over a vented room?
Daino
Well-Known Member
Your leaves in that picture is giving a tell tale sign that something is off aswel maybe too much light or too much heat I have another room running mh for veg and hps for flower and I have noticed on warmer days or when I start a run closer to summer even tho the room is climate controlled and my air con struggles some days all that extra heat has caused me to get some foxtales in the past aswel but once I got temps sorted I and lights at the right distance I never really got them again after that so bit puzzled
xox
Well-Known Member
co2 doesn't cause fox tails, a combination of too much heat/light as well as genetics will play a role when it comes to fox tails. but if your genuinely concerned about the buildup of co2 you can put a 4" inch fan with a carbon filter on a timer vented outside that will exchange all the air in your room on lights out. my room is setup this way dont forget to install a damper on a spring or a similar device to open and close your vent. i run my room at 1500 ppm burning natural gas on lights out a timer clicks on and runs for an hour exchanging all the air in the room bringing the rooms co2 down to same level of co2 as the rest of the building.
would solve some stagnant air problems aswel dunno if I would like my buds growing in stale stagnant air with no exchange whatsoever nah dunno if I be down with smoking that stuff 
kingzt
Well-Known Member
My sealed rooms do this as well. What's happening is because of light intensity. I have had the same problem trying to maximize yield so I crank my lights all the way up in flower. Some strains don't mind it but I have a couple that foxtail. If you want to run your lamps at a higher intensity you should raise the height of your lamps or flower your plants sooner when they smaller.
nxsov180db
Well-Known Member
I dialed the lights wayyyy back this time, always assumed it was light too but definitely not it.
kingzt
Well-Known Member
Interesting. What about heat? Also would to nitrogen in flower cause it? Maybe someone come chime in with info about that.
nxsov180db
Well-Known Member
It's not too warm, cooler with the lights dialed back for sure. I only use about 70ppm N after week 2.
newbplantgrower420
Well-Known Member
My rooms are fully sealed co2 does buildup at nights up to 2.5-3k ppm since theyre exhaling co2 at nights and its fully sealed. I have no foxtailing whatsoever.
It has to be another factor. Either genes or too much light stress. Dont think its heat either. I had some AC troubles last run going up to 90F towards the end of flower but no foxtailing from it.
It has to be another factor. Either genes or too much light stress. Dont think its heat either. I had some AC troubles last run going up to 90F towards the end of flower but no foxtailing from it.
nxsov180db
Well-Known Member
eh idk, I ruled out both heat and light. lights were dialed back to about 60%, temps around 80.
Nifty420
Active Member
Foxtailing is from too much nutrients in the rootzone and potentially too much light in my experience. Some strains are more prone to it than others.
nxsov180db
Well-Known Member
Hmm, maybe ill keep an eye on runoff later in flowering from now on and give them periodic flushes..