found your grow and from reading earlier on in this thread about extraction , i have as you know purchased the AC unit and that is the single tube kind it only takes are from the room and pushes it through the condensor and out the window and duimpos the heat outside , now the beenfit of this even though i could have just used an tent extractor is for an extra £70 i got a cooler and duhumidifier as well and if i leave the top window open i can use the bottom window top extract air as the top window brings fresh air in to not only refresh the room but also extract the hot air . if you could get a two tube version where it takes air from outside and also dumps it back outside usiong the two pipes , you could connect a carbon filter to the intake side and vent the hot air out out your window giving you air extraction and coling if needed . and with one of these kits which i have purchased . here at the link i think you can get them ion usa amazonYea it is alota stress,I just had to cull 2 plants(2 of my best feeders w thick stems) cuz they Hermed after topping, defoliating and transplanting. Of I had space an more time I would try to topp method but I'm trying to keep veg time to under 8 wks and need a training method that I can do while living my life. So I was gonna try fluxing but idk if I can upkeep the required training on a reliable time frame. So I think I will topp them 2 to 3 times, then tie down the stalks to the 1 gal pots I been vegging in. Once I transplant to 5 gal fabric pots I will be able to work w the plant and guide them as the flower using safety pins,coat hangers and anchors like lc does.
it has zips to hold 2 ac unit intake and extractor hoses. it can just be used with a tent grow fan and a carbion filter . its what i use now to put my ac unit out of the window .
its made thje room a lot cooler and easier to control humidity too.