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Thread: Terrarium

  1. #1

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    Hello everyone
    Inspired by homer's post on his ventilation setup, I decided it was time my plants received better treatment. This idea also comes from when I grew [legal] mushrooms in a terrarium. It's amazing how you can apply bits and pieces from here and there.
    I realise I could just buy a cool mist humidifier, but the idea has never tempted me.
    I primarily grow highland Nepenthes - the terrarium used to sit on the windowsill infront of a window, which I'd crack open in the evening to cool the plants all throught the night. This method yielded satisfactory results (54F - 62F), but sleeping in the 50Fs wasn't always comfortable, and the humidity in the tank used to drop instead of rise. Also, the terrarium didn't look particularly good on that narrow windowsill.

    I'll let the pics do most of the explaining.

    Here we see the fan (cheap clip-on), the front wrapped in clear plastic, which narrows down to the 32mm "waste" pipe. The other end of the pipe is inserted in a practically airtight polystyrene box (in which a plant arrived, hence the tape and tatty appearance) which houses the mini fogger and of course the water that feeds it. The outlet pipe then leads into the terrarium.


    At night the fan sits face up on the open window.


    I was afraid the fan wouldn't have the umph but it manages well for the moment.


    ...and this is what the terrarium looks like 20 seconds after my ghetto cooling humidifier turns on.


    So far so good, but the fan makes a racket. There's lots of room for improvement, and the first is to cut the pipe leading from the fan alot shorter (which will be done in about 10 minutes). Eventually buying a more efficient fan is next, to increase cooling and sleep quality [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_l_32.gif[/img] I'm thinking along the lines of a bathroom extractor fan. After that would be the reservoir and the overall appearance of the setup.
    I'm sure I forgot to mention a few things, but I can say the plants have shown noticeable improvements, and to me this is the most important factor. Please do comment if you have any ideas for improvement!

    Cheers,

    Amori

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    I have a similar setup but use a computer fan. You might want to try that, It is quiet and moves alot of air.
    -Nick
    It's like walking out a door and discovering it's a window.

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    Get a 4" CPU fan from radioshack. It can be wired to a standard two-prong cord. You can leave the fan run all the time and it's very quiet. Hook the fan up to a 4" diameter flexible aluminum duct (hardware store). It works like a charm.

    Brian

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    Outsiders71's Avatar
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    I need to get some better ventilation in my growspace. Currently I have 2 PC fans dangling from the shoplights that blow towards the middle. I really want to have some in/out airflow setup. My problem is this:

    I have a 5 tier utility shelf. It is wrapped with reflective mylar on the sides and the back. I also got some taped down on the bottom of the shelf. On the front I use a tarp that I cut to enclose the shelves. I stapled reflective mylar on the other side of the tarp. This way the lights aren't too noticeable when on (I have this in my room so it would be annoying to have all that light everywhere). So how do I get ventilation in and out of this? The only thing I can think of is to cut holes into the wood that creates the shelf. I'm not sure I want to do this though because this would be permanently altering the shelves and I wouldn't be able to change that. So I'm stumped for the time being. If I did cut a hole through the side of the mylar, and used some PVC, what would I use to support it there? If anyone has any suggestions I would be interested!
    James 1:17

    "Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows."

  5. #5
    Composter losfreddy's Avatar
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    computer fans are cheap. like 4 bucks, 5 bucks.. never have used one becasue of the fear of running up an electric bill. if i set up the fan i have to go the whole nine yards [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_m_32.gif[/img] i wonder, sense plants exchange CO2 for O2, if you could get dry ice and let it gas out over the terrarium and fill it up with benefictal CO2 for the plants.

    how did you make the mini fogger as described in your post? is it just water with a air stone or somthing?
    Quit reading my mind!

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    Composter losfreddy's Avatar
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    Quote Originally Posted by [b
    Quote[/b] (shokuchuu @ Oct. 25 2005,4:05)]This idea also comes from when I grew [legal] mushrooms in a terrarium.
    hey! ive grown those too..(Shagy Mane- edible) how did you do it? i used coconut fiber. but i find it hard to keep the pins alive.
    Quit reading my mind!

  7. #7
    A Cajun(isc) Carnivore CP30's Avatar
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    I like the set up Amori. I agree that a CPU fan is a very good option - quiet and efficient. Jim, I also use a utility shelf for wintering my plants in the garage - mine is wire. I wrapped the back and sides with mylar and then draped the whole thing in clear painter's plastic. I fashioned a flap on the front for access. The 4' fixtures hanging from each shelf create a lot of heat - especially when the weather couldn't make up its mind what to do and would go from 80F one day to 60F the next and back and forth....Anyways, I added a cool mist humidifier ($19) to the set up on the bottom shelf for humidity and then added a CPU fan ($6) to the top. I cut a whole in the plastic and tied the fan to the wire shelf so it would blow out, sucking air from the bottom of the unit thru the top, assisting the movement of the moist air.
    If your shelves are wood, the air flow will be greatly reduced.
    All proofs inevitably lead to propositions that have no proof. All things are known because we want to believe in them.

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  8. #8
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    I was kinda hoping to get a wire-shelfed setup but the lowes at my house didn't have any. They just had the thin plywood ones, all the other utility shelves weren't 4 feet long so they wouldn't fit the shoplights.

    I wonder if I can buy wire shelves that will fit the slots?
    James 1:17

    "Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows."

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