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Thread: DonH's Cold Growth Chamber

  1. #9
    mobile's Avatar
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    The cool temperatures certainly bring out the best colouration in Heliamphora. I would be interested in knowing more about your setup.

  2. #10
    i dont do pots. amphirion's Avatar
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    Always a fun time drooling over your schmorgasboard of delightful eye candy--even more so that they are all well grown! Thanks for sharing with us your collection!
    " You keep using that word. I do not think it means what you think it means." -Inigo Montoya
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  3. #11
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    Quote Originally Posted by mass View Post
    What's the chamber look like? Can we see that and how the lights are setup with it?
    Quote Originally Posted by uphwiz View Post
    got any pics of the setup , would love to see how you grow, i have considered something in a small fridge bot havent even thought of a chest freezer, Hmmm?
    Quote Originally Posted by mobile View Post
    The cool temperatures certainly bring out the best colouration in Heliamphora. I would be interested in knowing more about your setup.
    As Corky mentions, Don shared a pic of his setup over here. For those who haven't seen it yet, the entire thread is worth a view...
    All the best,
    Ron
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  4. #12
    Sarracenia freak Brie's Avatar
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    Awesome plants!! I too would love to see this set up.

    Edit: Thanks Ron.

  5. #13
    DonH's Avatar
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    Thanks for all the kind comments...

    Here's the article I used for reference in building my growth chamber. It's a good read.
    A Novel Method For The Cultivation OF Nepenthes Villosa by Jeff Shafer, PH.D.

    Here's a pic of my setup


    I've modified the chamber to include a CO2 system which comes on every 3 hours when the lights are on. A CO2 calculator was used to adjust the level of CO2 and an internal fan circulates it throughout the chamber.

    I use 4 - 54W T5's for lighting which generates a considerable amount of heat. I have the lights raised about 4" above the plexiglass with a fan blowing through the gap to prevent the freezer from coming on as often.

    I use 2 thermostats linked in series as a redundant system to prevent disaster. If the thermostat malfunctions, the chamber can easily freeze your plants (it is a freezer after all) if it stays on. It can also cook your plants if it doesn't turn on with temps exceeding 90F from the heat of the T5's.

    Now I can control light intensity (by raising or lowering the shelf), photoperiod (currently on 16 hours/day), humidity, CO2, and nutrients (1/4 strength MaxSea and coffee). I'm hoping this provides ideal and consistent growing conditions year round so there are no setbacks in growth.
    Last edited by DonH; 12-16-2012 at 11:17 AM.

  6. #14
    mass's Avatar
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    fantastic, and ingenious.
    What do you have the thermostats set to for day and night temps?

    Think I need to make my chamber a little more air tight. I lose quite a bit of my fog/humidity through some spaces in the plexiglass.
    Do you have an idea of what your high/low humidity levels are for day and night?

    Sorry for all the questions. I tend to get like this when trying to copy the methods of those I look up to.

  7. #15
    DonH's Avatar
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    Temp:
    Day 69-72F
    Night 50-53F

    Humidity:
    Day 75-85%
    Night 99%
    When the freezer kicks on, it drops the humidity fairly quickly but the humidifier bumps it right back up.


    The chamber is pretty air tight. I use strips of foam as insulation between the freezer and the plexiglass. The only possible leak is from the small gap where the humidifier enters the chamber and the small hole at the bottom for drainage.

  8. #16
    mass's Avatar
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    I'm not too far off then.
    My temps are only 5*F warmer than your day and night temps. humidity is the same..
    I know what you mean about the cooler sucking the humidity out. I'm running 2 humidifiers to try and counter-act the night time AC here.

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