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Thread: Poll: Highland Nep. Cooling Methods

  1. #25
    swords's Avatar
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    When I was a little kid I used to get night time nosebleeds from the dry air. Luckily I seemed to have out grown that.

    I'm sure the actual outside is moister since there are ferns, mushrooms and mosses growing in the woods around my condo. But the air circulating underneath the lamps where my plants are is only 20% if I don't do something to change it. Misting the plants raises it to about 36-40% but once the water droplets evaporate it goes right back down to 20% within half an hour.

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    Well since the OP asked for experience with current setups I'll chime in my two cents.

    I have a relatively small grow area that I cool using the ice bottle method haha. I'm surprised no one mentioned the ice bottles yet! Anyhow it's about a 35" x 20" x 26" enclosure with an oblong house shape if you can imagine it. I use two 2 liter bottles in the back, and the entire enclosure has a single foam layer 3/4" thick for insulation. With the lights on during this time of year it gets from around mid 70s to low 80s. So I'll wait for about 45 minutes to an hour after the lights are off and put the ice in. It takes a few hours but it can get the enclosure down to the low 50s, I keep it right next to the window so that always helps. My thermometer has recorded as low as low 40s.

    And because the ice sucks the humidity I run a ultrasonic humidifier hooked to a humidistat. This system has been working out well for me, specially being a poor college kid on a budget. Hopefully this gives you another option to look at!

  3. #27
    Not Growing Up! GrowinOld's Avatar
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    Red face Thanks!

    Thank you EVERYONE!
    Of course ALL ideas and thoughts
    are welcome and much appreciated!

    It would be nice to hear from those who are using other methods
    than those already described.

    I have wondered about the people using air conditioners,
    as I am curious about how cold an AC can get a grow-chamber/room,
    as it has a thermostat that limits how cold it can go.

    Also wonder about any problems with needing to drain off a ton of water,
    lest it pollute ones water supply. (Would the water running over the
    copper tubes be enough to really pollute the water runoff?
    What about aluminum??) I thought of a system to make use of the
    condensed water, since its pure, but I suppose it won't be once run
    thru a few condensing cycles.

    I AM interested in any of the problems people have with whatever systems
    they are using. I think we all know about the hassles of lugging water/ice
    bottles every day.

    Again, thanks to all of you who have contributed.
    Your input is MUCH appreciated.

    The only way to bring the cost of Highland plants down, is when its possible
    for near everyone to grow them well.

    Paul
    Experience is the best teacher. At least it used to be.
    But then, common sense isn't so common anymore, is it.


    http://www.terraforums.com/forums/sh...d.php?t=113866

  4. #28
    Lover of Mountains nightsky's Avatar
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    Quote Originally Posted by GrowinOld View Post

    I have wondered about the people using air conditioners,
    as I am curious about how cold an AC can get a grow-chamber/room,
    as it has a thermostat that limits how cold it can go.



    Paul
    I can set mine from 61F to 75F. It is outside my growchamber (cooling the room the chamber is in), and the chamber is humidified. Even still, I only have to empty the condenser water collector about once every two weeks. It works great, but... it can get a bit pricey August.

  5. #29
    Let's positive thinking! seedjar's Avatar
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    The condensation/metals question is a good one, Paul - I hadn't really given it too much thought before. I think they make cleanable dehumidifiers that have ceramic condenser plates, though. Otherwise you might be able to treat your cooling coils with something like a thin silicon epoxy to seal them. That would probably interfere with cooling efficiency, though. Maybe Rain-X?
    ~Joe
    o//~ Livin' like a bug ain't easy / My old clothes don't seem to fit me /
    I got little tiny bug feet / I don't really know what bugs eat /
    Don't want no one steppin' on me / Now I'm sympathizin' with fleas /
    Livin' like a bug ain't easy / Livin' like a bug ain't easy... o//~

  6. #30
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    I had a small window unit that I just designated for the tank itself, ran the aluminum tubing from the main cooling duct on the AC unit... all I did was turn it to "full blast" basically and just kept it on a timer... it was pretty simple, but if you dont have a window unit/window. I guess this may not be much help..

  7. #31
    swords's Avatar
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    That's precisely what I do in the summer, run the duct from the AC output to the chamber - still intersected by the ultrasonic humidifier to make sure the air is well saturated. I leave the AC going most of the day too since I don't like heat any more than the HL plants do! Nights don't get down to 50*F in August. August is likely the hardest month to get below 60*F at night even with the A/C. However, outside of mid June - mid Sept my window duct method is totally hassle free for me. In mid June hook the fan to the output of the window AC (in the window) and I'm done.

    "Set it and forget it" is my motto, must be from sleeping thru all those infomercials!

    The plants can deal with 60*F at night for those few months and come out all guns blazing as soon as the nights cool down in Sept and grow well until next June when they slow down.

  8. #32

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    Hey swords, I actually liked your idea a lot and decided to mimic it (hopefully you don't mind..)

    It helps me out a lot because now I don't have to worry when I leave for the weekends and when I'm on breaks. That ice thing was starting to become a hassle haha. At any rate I'm having some trouble with the humidity. I can't get it above 60%! I use a reptifogger ultrasonic humidifier and it intersects with the ducting before it reaches inside the chamber. I was wondering if you could tell me what kind of humidifier you're using? And by the way is it quiet? My grow chamber is inside my bedroom so quiet is a must have.

    Thanks!

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