asaph
Well-Known Member
So I wanna use 2 lamps (600 + 400) in my 4'X4'X8' tent, in a vertical grow with plants on the floor or on a drain table. I have an AC in my room. It's a 1h/p unit with full-load consumption of 0.9kw/h. a normal size bedroom (~3X3 meters). In the coming winter, outside night time temps normally range from 5-15 c, and in the summer night time temps can reach as high as 25, but normally around 20.
Two options:
1. hang the bulbs, just like that. above the bulbs - ducting to a 250-300cfm centrifugal fan, with carbon to extract outside of the room. Another fan + ducting in the bottom part for good active intake, plus a floor fan on the drain table/floor to blow on the plants.
disadvantages: may be very costly to purchase (300$, 600$ if I want/need 500-600cfm). extracts much air from the room, thus making a/c less efficient (?).
2. place the bulbs inside two cooltubes, one on top of the other. have an isolated ducting run from outside through the bulbs and outside with the 250cfm extractor, no carbon filter needed this way. Aside that, also extraction from the tent space with maybe a 100cfm centrifugal, passive intake into the tent, and no intake into the room (beside the a/c). Also a ghetto co2 system with yeast and sugar (like, pounds of...). and of course the floor fan in the bottom of the setup. (see photo for option 2. ignore the Hebrew). A grower friend says he has good experience with this method all in all - but his setup is much bigger than me (a few thousand watts).
disadvantages: Cannot place bulbs side by side, have to go high above - means I need massive, tall plants in big pots to use this setup properly; Lose light on account of cooltubes; Lose some pot space due to lower ducting into the cooltube from below (see diagram); With hardly any extraction from the room, I'll need the a/c to do a VERY good job dehydrating the room in flowering, and the ghetto co2 system to work well.
advantages: less costly to deploy (250$~).
what i'm basically wondering, is which way will be more energy efficient, i.e - make the a/c run less. I don't mind spending a little more to save on that - i'm going for the long run here. Which approach do you think is more efficient?
Two options:
1. hang the bulbs, just like that. above the bulbs - ducting to a 250-300cfm centrifugal fan, with carbon to extract outside of the room. Another fan + ducting in the bottom part for good active intake, plus a floor fan on the drain table/floor to blow on the plants.
disadvantages: may be very costly to purchase (300$, 600$ if I want/need 500-600cfm). extracts much air from the room, thus making a/c less efficient (?).
2. place the bulbs inside two cooltubes, one on top of the other. have an isolated ducting run from outside through the bulbs and outside with the 250cfm extractor, no carbon filter needed this way. Aside that, also extraction from the tent space with maybe a 100cfm centrifugal, passive intake into the tent, and no intake into the room (beside the a/c). Also a ghetto co2 system with yeast and sugar (like, pounds of...). and of course the floor fan in the bottom of the setup. (see photo for option 2. ignore the Hebrew). A grower friend says he has good experience with this method all in all - but his setup is much bigger than me (a few thousand watts).
disadvantages: Cannot place bulbs side by side, have to go high above - means I need massive, tall plants in big pots to use this setup properly; Lose light on account of cooltubes; Lose some pot space due to lower ducting into the cooltube from below (see diagram); With hardly any extraction from the room, I'll need the a/c to do a VERY good job dehydrating the room in flowering, and the ghetto co2 system to work well.
advantages: less costly to deploy (250$~).
what i'm basically wondering, is which way will be more energy efficient, i.e - make the a/c run less. I don't mind spending a little more to save on that - i'm going for the long run here. Which approach do you think is more efficient?
