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Thread: Nepenthes hamata

  1. #9
    swords's Avatar
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    Yes, it is most definately a humidity hog! The more the merrier for Mr. hamata!

    What I did was get a humidistat (like a thermostat but instead of a heater it controls a humidifier) and plug in my ultrasonic humidifier the type that make dense fog, not warm steam or "cool mist". The humidistat is set at 80% but it is installed near the lights so that the humidity sensor on the humidistat is kept drier than the actual bench area where the plants are. This causes the plants humidity to actually be in the 90%+ range. The leaves are "clammy" meaning cool and almost wet but be sure to keep the air moving from either a small fan inside the tank or blowing through a vent from a window (which is what I do) as highland plants really appreciate fresh moving humidified air which was the hardest part for me to get correct with my highland chamber. Also building a chamber out of a material which will retain cool air will help with the cool nights.

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    Josh,

    Looking at the older leaves on your plant, the burning and the fact that they appear longer and less succulant than the latest leaves, I think the plant is now getting more light that it used to have. You should be looking forward to seeing some great pitchers soon [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]
    Rob Cantley
    Nep Nut in Sri Lanka
    http://www.borneoexotics.com

  3. #11
    swords's Avatar
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    Thanks Rob! I was actually getting a bit concerned that the leaves were not reddening as the earlier leaves but the pitchers have increased pretty dramatically despite the lack of pigment. There simply may be less UV coming through the power compact florescents it's growing under as the bulbs are quite old (might be a year old, might be two). I will probably put a 400W metal halide ontop the chamber instead of replacing the 200 watts worth of PCs (replacing the bulbs would cost the same as running the unused halide for six months).

    More light has always got to be better right? Is it possible I could damage a Nepenthes with too much light even if humidity is high (90%), temps are correct and the air is moving?

  4. #12
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    Question

    i know of 4 clones or what ever you callem [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img]

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    Josh, I am really not an expert on growing under artificial lighting. I've only ever done this for a few years whilst I lived in Hong Kong in the 1990s and then I used a combination of sodium vapor and metal halide lights.

    In my opinion you are unlikely to give a highland species too much light artificially. Older leaves may suffer, but new leaves should be tougher and pitchers larger and better colored. However, increasing light levels greatly is also likely to increase the level of infra-red (heat) and cause heating of the leaf surface and surrounding materials with consequent drop in relative humidity which the plants won't like at all. It's a tricky subject which I guess Jeff Schafer will know rather more about than I do.
    Rob Cantley
    Nep Nut in Sri Lanka
    http://www.borneoexotics.com

  6. #14

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    Josh,

    with giving the highlander more light where some of them don't mined it but also you have to think about the ones that don't like it at all and like it more on the parcal light but, from yourset up you do have the shelves in there to block some of the light to get to them.

    to answer some what of what i have noticed is when i was running to bulbs flor. and them jumped up to 4 bulbs the drop in the humidity did go down some and the temp went up some also. so basiclly i had to pump the ultrasonic on to full blast to kepp the humidity up and move the light up some to lower the temp. so running more light to them would cause the enviroment to change. it would be something you would have to play around w/ to get the enviroment to where it is supposed to be but, on another note i don't run the same kind of lighting system you have.

    now Rob mentioned that your pitcher are going to look better than that. now that is somethingi wouldlike to see later on in a month or 2 when you have a new set of pitchers coming from the plant. already i think your N.hamata looks great. still waiting on that one to add to my grow list.
    George McKay

    In The End We are All Dead
    Florida

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    If I boost up the lighting to MH I will still have the humidity and temperature controlled by humidistat and thermostat to keep those parameters the same there will just be about twice the amount of light.

    Is there a way to measure the infrared heat on the leaf surface? Does air flow have no influence on this sort of heat transfferance no matter if fans and cooling equiptment are in play, damage can still occur?

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    Hi,

    under good light levels the colour of the leaf midribs of the purplish clone of N. hamata will turn to a red to purple colour:

    [img]http://home.**********.com/joachim/N_hamata_leaf_0203_small.jpg[/img]

    Joachim

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