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passive plant killer
- Thread starter delta9nxs
- Start date
Current culprit: Sunleaves... nice consistency, super dirty... takes about 5x the volume in a rinse to get clear.
Did it, about an inch thick. Seems to be helping... visually. Much fewer fliers visible immediately. I have no idea what's happening beneath it.
petemoss
Active member
I'm pretty sure the fungus gnats came with my coco. I'm using Botanicare CocoGro bagged coco. There's a brand of bagged coco that's supposed to be steamed, I forget the brand, but that should kill any gnat eggs. I was researching fungus gnats and read that a female gnat can lay about 300 eggs at a time. Also, the gnat larvae feed on the fungus in the soil (or coco) as well as young roots.
T
thesloppy
I made a thread in the coco forum, for the questions I had about gnat origins, 'cuz it probably doesn't belong in here:
Coco & gnats, brand or store specific?
Coco & gnats, brand or store specific?
Hey d,
Hows the work progressing?
Hows the work progressing?
real well! i'm working alone so it's slow but i've got all the framing done and am about halfway through the insulating.
i had to seal up and insulate 3 windows and a door that all went to the outside.
i'm using combinations of fiberglass batting, foam boards and reflectix with caulk and spray foam trying to achieve around r-32 at least in the sides and the overhead will be around r-45.
i'm going for a sealed room so i decided to use reflectix for an interior wall surface.
i had intended to hang a 24k btu and an 8k btu out of the windows but decided to hang 3 8000 btu units in the new wall i built across the shop so that the ac's will be entirely within the shop.
i will be operating 6 bare bulbs at a time so i hope the 24000 btu total will cool the room. if not i can easily hang one or two more.
looking at co2 burners now and since i am a total noob with co2 pointers are very welcome.
the shop has a 200 amp panel with a lot of unused space on the bar so i can run a 20 amp circuit to each ac and have fans and lights on their own circuits.
there is a 240v 50amp range receptacle so that's it for the lights.
it looks like the guy who built it was setting up a complete kitchen and a bath with shower. everything is there but unfinished.
my system is completely built and ready to go so all i will have to do is hook it up.
i started 64 seeds a week ago so i'm on a schedule now.
nice to be connected to the world again!
later
i had to seal up and insulate 3 windows and a door that all went to the outside.
i'm using combinations of fiberglass batting, foam boards and reflectix with caulk and spray foam trying to achieve around r-32 at least in the sides and the overhead will be around r-45.
i'm going for a sealed room so i decided to use reflectix for an interior wall surface.
i had intended to hang a 24k btu and an 8k btu out of the windows but decided to hang 3 8000 btu units in the new wall i built across the shop so that the ac's will be entirely within the shop.
i will be operating 6 bare bulbs at a time so i hope the 24000 btu total will cool the room. if not i can easily hang one or two more.
looking at co2 burners now and since i am a total noob with co2 pointers are very welcome.
the shop has a 200 amp panel with a lot of unused space on the bar so i can run a 20 amp circuit to each ac and have fans and lights on their own circuits.
there is a 240v 50amp range receptacle so that's it for the lights.
it looks like the guy who built it was setting up a complete kitchen and a bath with shower. everything is there but unfinished.
my system is completely built and ready to go so all i will have to do is hook it up.
i started 64 seeds a week ago so i'm on a schedule now.
nice to be connected to the world again!
later
Snook
Still Learning
Sure, now you'll have me sealing up my room for co2. Maybe.
Good that you're back...
Sure, now you'll have me sealing up my room for co2. Maybe.
Good that you're back...
thank you!
boosting co2 is an area that i have not been able to play with before because of the places i have grown in.
my last place needed a huge air exchange just to cool the room as i was working off the house heat pump. no way to seal the room.
this room will be very tightly sealed and super insulated.
from the reading i've been doing lately there are two ways to run the room with co2.
the first is to pump it in and then vent it after a while, using lots of co2 each time. greenhouse operators do this as the greenhouses are not airtight.
the most efficient way is to run it totally closed. this requires closed loop ac's. the lg electronics ac's have a lever that opens and closes a vent in the machine that either allows air exchange or not.
so i need a burner. i don't want to haul around cylinders. the house has a propane fireplace and a connection for a gas grill on the deck. there is a line going into the shop, presumably for a heater that never got installed. and a line going out into the yard but no tank. i'm trying to get one now.
the old school of thought on co2 was to run it at around 1500 ppm but the literature from the burner manufacturers says to start at 1200 ppm.
but good old dr assholely from the U of Miss. says 750 ppm in his paper. but he only tested up to 750 ppm so i wonder.
i don't know what size i need. 24 medium sized plants and i have 1871 cu ft. with the actual dimensions at 9' 2" x 29' 2" x 7'.
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welcome aboard! you should go ahead and start thinking about a new time consuming hobby right now to avoid the stark emptiness that will pervade your life when you start growing with this method.
gregor_mendel
Active member
When I first started reading this thread, I thought this often repeated idea was supposed to be funny.
As it turns out, it is just the truth.
The only thing I do in my garden now is add nutrients to the volume reservoir.
Every ten I days start lifting the lid on said reservoir, hoping it is low enough to justify mixing up another batch of nutrients.
There is just nothing to do.
Snook
Still Learning
You can now spend time cloneing and having girls ready for the next go. I'm going to cut down veg times to 1 week (from 3) because.. I dont believe I'm saying this, I cant get rid of it fast enough... maybe adding 2 plants (making it 6) of smaller different lineages. I believe that the production/yield/quality from a seed plant is nowhere near what it will be the 3rd grow, INDOORS, under lights. being the primary recipient of my efforts... it's all about ME.. and, with good genitics and a bullet proof growing regime, D9, the only things different with each plant harvested is the taste... the highs.. <it's hard to tell them apart.
as for co2, I was under the impression that the sealed room, w co2 burner was the way to go. lung room a must, one can/must run higher temp, 85ish (not as much AC). air circulation and dehumidifier are key. I ran the on/off, with bottles in dwc.. PITA.
I aways thought the 1200 to 1500 range was what was called for. ya hear what I'm saying up there^^? THERE'S TOO MUCH! HAHAH!!
snook, so you did not think the co2 was worth the trouble?
and why is the lung room absolutely necessary?
i was under the impression that i could supplement co2 during lights on and then leave the same gas mix in the room for lights off. surely it will deplete through various means during the night.
and even if it doesn't is there a negative effect on plants?
the only thing i can think of right now is that the higher co2 concentration might displace enough o2 to interfere with root intake. but i doubt it.
i've been reading a lot of stuff on this and can't seem to find the info i want. i think i'll go over to the grow room design forum and see what's what.
and why is the lung room absolutely necessary?
i was under the impression that i could supplement co2 during lights on and then leave the same gas mix in the room for lights off. surely it will deplete through various means during the night.
and even if it doesn't is there a negative effect on plants?
the only thing i can think of right now is that the higher co2 concentration might displace enough o2 to interfere with root intake. but i doubt it.
i've been reading a lot of stuff on this and can't seem to find the info i want. i think i'll go over to the grow room design forum and see what's what.
maybe try the advanced botany? forum here, i think there is one by spurr
here it is
The facts about CO2 ppm: don't use 1,500!
https://www.icmag.com/ic/showthread.php?t=221893
here it is
The facts about CO2 ppm: don't use 1,500!
https://www.icmag.com/ic/showthread.php?t=221893
D
disciple
The third way to look at CO2 is related not to concentration, but availability.
The dosing schedules or controllers are pumping CO2 into the room.
But the are not necessarily putting CO2 where it needs to be.
I believe this is the success of DHF's double exchange per minute without supplementation... that is, by moving the air with that degree of gentle thoroughness, there are no CO2 dead spots (or wind burn from beating the shit out of your plants).
A lung room provides the opportunity to even out day and night temps and humidity and CO2 night time off gassing and redirects it to metabolically active plants. It redistributes the heat and humidity such that control is required less. Managing a 800ppm CO2 high flow room during light and dark will not negatively effect night physiology at night.
If you are moving enough air with enough thoroughness through the whole canopy, we can feed at lower levels in the same way our nute feed is at a 'reduced' concentration through constant available supply in the PPK.
Maybe.
The dosing schedules or controllers are pumping CO2 into the room.
But the are not necessarily putting CO2 where it needs to be.
I believe this is the success of DHF's double exchange per minute without supplementation... that is, by moving the air with that degree of gentle thoroughness, there are no CO2 dead spots (or wind burn from beating the shit out of your plants).
A lung room provides the opportunity to even out day and night temps and humidity and CO2 night time off gassing and redirects it to metabolically active plants. It redistributes the heat and humidity such that control is required less. Managing a 800ppm CO2 high flow room during light and dark will not negatively effect night physiology at night.
If you are moving enough air with enough thoroughness through the whole canopy, we can feed at lower levels in the same way our nute feed is at a 'reduced' concentration through constant available supply in the PPK.
Maybe.
thanks mcfly! i just read the thread and it helped!
disciple, that's my thinking on the lung room also. i don't see any reason one room can't be controlled alone.
and one room is it for me here.
i've read a lot about the theory of operating a sealed room but have never tried it. if i can truly operate without venting i will be very happy.
i really think it's going to be easier than all the crap i was doing juggling doors and vents and thermostats to get the environment i want.
so just get the biggest burner i can and fire it for a shorter period?
i'm looking at sentinel 3-6 cu ft and the 6-27 cu ft models and their big controller.
so the general consensus is to fire it up to 1500 ppm and then let it deplete down to what?
750 as dr el sohly suggests or 900 as spurr mentioned.
i like the idea of timing it to go off sometime before lights out to deplete the concentration down to about ambient if the ethylene buildup is significant.
disciple, that's my thinking on the lung room also. i don't see any reason one room can't be controlled alone.
and one room is it for me here.
i've read a lot about the theory of operating a sealed room but have never tried it. if i can truly operate without venting i will be very happy.
i really think it's going to be easier than all the crap i was doing juggling doors and vents and thermostats to get the environment i want.
so just get the biggest burner i can and fire it for a shorter period?
i'm looking at sentinel 3-6 cu ft and the 6-27 cu ft models and their big controller.
so the general consensus is to fire it up to 1500 ppm and then let it deplete down to what?
750 as dr el sohly suggests or 900 as spurr mentioned.
i like the idea of timing it to go off sometime before lights out to deplete the concentration down to about ambient if the ethylene buildup is significant.
yep, my old room had about a 2x per minute air exchange plus fans. every leaf moved slightly. now i'm not going to have any exchange at all but there will be a lot of air movement.
i'm a little worried about it but this room is going to be super tight and super insulated.
all electrical and plumbing are going in through tubes that can be foamed shut. the reflectix overlapped and taped. bead of caulk sealing the reflectix to the floor.
i'm building a custom door that is heavily insulated but also seals top, bottom, and sides with double gaskets.
foaming the ac's in place.
speaking of ac's, i wonder how much btu i need to offset the burner heat? i've got the three 8000 btu ones now but i could easily install two more if i do it now.
maybe this is a good reason to run a big hairy burner instead of a little one that is cranked up all the time.
D
disciple
gregor_mendel
Active member
My understanding of lung rooms is that they are uniquely suited to conditioning two dedicated flower rooms on a flip flop.
Single flower room equals no advantage to a lung room.
Single flower room equals no advantage to a lung room.
