[Speed of green]

The "soil" is inert. peat and perlite mix. i don't know if these plants could handle a feeding that high i think they would burn for sure.

[queequeg152]

is cannabis a super sensitive plant? i would think not... i mean i can run toms way way way up 3ec feed... ive done it before with no negative effects. the runoff ec is much higher too... you just cant do it in the fall or summer when light intensity is low or when temps are very high.

like i said earlier, tobacco is an absolute monster on ferts... its honestly ridicules how much fert a tobacco plant will eat... idk how the fuck they do it in fields? they most just fucking motor up and down the furrows dropping... urea prills and anhydrous ammonia or some cheap shit like that idk.

[Jackstraw215]

This grow is exactly like I've been envisioning except maybe using one of these poly greenhouse kits I live in Norcal though and my temps max out at like 65 even in summer but I'm coastal and get tons of humidity too so I would need heating for the winter and a nice dehu. I was thinking of using carbon filters like you as well I just don't know how my neighbors would feel about it.

[queequeg152]

you dont really need a gothic arch tunnel for non snow-loady areas like california.

have you seen crushnyuba's poly tunnel thread? that rout is going to be a far cheaper, far more flexible option imho... polycarbonate is nice, but the good panels are ball shatteringly expensive... im guessing what ever is going to come in your kit will be thin and shabby.

also i dont see why one would ever need to dehumidify a greenhouse... when you are heating the thing, you are going to be dropping the RH substantially... so its not like you are going to be all rainforest mode in the winter...

[Jackstraw215]

Yeah I don't know , I could still see RH being a huge problem, the area I live is abnormal for california and it's incredibly humid at times. I wasn't set on the gothic arch 100%. I don't even know if I want to do it, it kind of scares me if my neighbors wanna be nosey but I could make the area it is more private with shade cloth or something.

[queequeg152]

i mean humidity could be an issue in the summer.... do you get alot of fog in the mornings? lots of over cast days with little sunlight?

worse case scenario would be a hot humid day without much sunlight. in this case the greenhouse would not heat above ambient very much, and the combined water vapor from the plants + the outdoor air could result in a higher humidity.

in this case though you would be running the greenhouse with as much ventilation as possible... sides rolled up and gable vent fans running full speed for as much air circulation as possible.

i would not expect any greenhouse crop to run without issues... i mean its basically like growing outside unless you want to put agressive insect netting on all of the ventilation and fan intakes.

what im saying is yes humidity could become an issue, but you would address this by conventional means... like maby growing a less dense plant, or adjustiing plant spacing to allow for more air flow. and yea... probably would want a chemical means to control mildew. there are myriad products including sulfur dust and sulfur burners... but sulfur vapor will deposite onto everything including the polyfilm, so you may have to clean it periodically.

[Jackstraw215]

Originally Posted by queequeg152

i mean humidity could be an issue in the summer.... do you get alot of fog in the mornings? lots of over cast days with little sunlight?

worse case scenario would be a hot humid day without much sunlight. in this case the greenhouse would not heat above ambient very much, and the combined water vapor from the plants + the outdoor air could result in a higher humidity.

in this case though you would be running the greenhouse with as much ventilation as possible... sides rolled up and gable vent fans running full speed for as much air circulation as possible.

i would not expect any greenhouse crop to run without issues... i mean its basically like growing outside unless you want to put agressive insect netting on all of the ventilation and fan intakes.

what im saying is yes humidity could become an issue, but you would address this by conventional means... like maby growing a less dense plant, or adjustiing plant spacing to allow for more air flow. and yea... probably would want a chemical means to control mildew. there are myriad products including sulfur dust and sulfur burners... but sulfur vapor will deposite onto everything including the polyfilm, so you may have to clean it periodically.

Any day above 65f in the summer is very rare and it's often in the 50's and yes foggy many days and overcast. I see many people with greenhouses for other things so I'm sure it can be done. I read crushnyubas thread and see his pellet stove idea. My GH would be right up against my house and I would implement electric heat. Seems dehu's aren't necessary because you can raise temp by 20f and cut RH in half and use roof vents as well. It would take creativity here, my yard isnt super large and my neighbors arent too far away so I don't even know if it's worth it if I'm doing indoor already. I wouldn't want people to smell a damn thing that's forsure, almost more worried about tweakers than police.

[Lime Green]

Originally Posted by queequeg152

its honestly ridicules how much fert a tobacco plant will eat... idk how the fuck they do it in fields? they most just fucking motor up and down the furrows dropping... urea prills and anhydrous ammonia or some cheap shit like that idk.

Same as commercial tomatoes I presume, "aqua ammonia" from anhydrous.

[Lime Green]

Originally Posted by queequeg152

. I would not expect any greenhouse crop to run without issues... i mean its basically like growing outside unless you want to put agressive insect netting on all of the ventilation

Exactly what I have done, with window screen material. Still wouldn't say I'm issue proof. But I can tell you this. If one varietal consistently gets PM in said environment, and another doesn't, select for what doesn't. Seems like a no brainer.........

[maxmurder]

Originally Posted by Jackstraw215

I wouldn't want people to smell a damn thing that's forsure, almost more worried about tweakers than police.

yup
you'll need to beef up security unless you have a gnarly outdoor dog.
I mean if you wanna sleep- cuz they fuckin don't