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Thread: 10 gal. fish tank hood

  1. #9
    D_muscipula's Avatar
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    Quote Originally Posted by MrFlyTrap2 View Post
    FYI, DM.

    The rectifier in your setup is redundant. Your wall transformer is already outputting DC and has one built into it.


    Quote Originally Posted by MrFlyTrap2 View Post
    Sorry for another post, but also think about stuffing some washers or something called a 'standoff' like this under your fan.

    It looks like you have it screwed directly flush with the wood. If you do that the fan can't 'suck' anything from behind it, labors a lot, doesn't move any air and can burn out over time. You can find these at almost any hardware store, but you gotta look in those trays above screws and bolts. And like I said, it wouldn't take much just a little extra space. Heck, you could also probably loosen the screw just a bit and have it hang loose just a little bit and it'd be fine.

    http://www.goldmine-elec-products.co...274&variation=
    Thanks for the advice I had never thought of that.
    idk if this makes any difference but the fan blows air into the tank, there is another hole on the other side of the lid that has no fan and the warm air natural rises out f the tank.
    It's very humid and gets natural ventilation I have hamata growing in there now and here is the recent pics


    Last edited by D_muscipula; 02-29-2008 at 07:41 PM. Reason: some minor typos
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  2. #10
    D_muscipula's Avatar
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    nice tank thbjr,
    I might try something similar.
    view my growlist
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  3. #11
    OMG h8 pings MrFlyTrap2's Avatar
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    DM, a rectifier converts AC electricity to DC. DC electricity is usually needed to run those small fans, and some wall transformers only output AC. You can see by your picture that your transformer already outputs DC by reading the back, so the rectifier is not needed since it has one already built into that black case.

    Nate.
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    "It is only by studying nature that can we ever hope to defeat it."

  4. #12
    Don't eat me,... Mr. Flytrap thbjr's Avatar
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    Thanks DM. Mr. FT is correct. All you need to do is connect the fan directly to the DC transformer. You can also use the differant voltages to get differant fan speeds. Although my fan is rated 12VDC, that pulls way to much air through. The 9VDC is good for cooling and I have a 5VDC I connect it to if I just want to move a little air.
    Take the 2 wires directly from the fan and touch one of them to the outside of the jack (ground) and the other one touch to the inside of the jack (power). Then change the voltage on the transformer and see.
    Tom

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    Thanks for all the input! I will use a old cell phone charger for the fans, and for the lights I went with 1 Daylight bulb and one soft white bulb. Hope that will be the right light for it. I will post pic's soon as it is done.

    I just received my new seeds today (Byblis liniflora, Cobra lily, ventricosa) so I'm all exited to get this up and running.

    Good growing
    Josh

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    Ok here is the top to show the lights.

    here it is with the lid on.

    soon as I get the fans I'll slap those on there. Still need to add some reflection above the lights but for the most part it looks great. I told my buddy that it didn't need to be attractive but he did so anyway. He even added wood to the bottom to hide the black base, this tank looks pro. I just hope it works good. haha

    Good growing
    Josh

  7. #15
    Don't eat me,... Mr. Flytrap thbjr's Avatar
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    Josh, the tank looks SWEET!!! Just a couple of suggestions (you may already know). A good bright white paint on the inside of the hood for reflection will do wonders, Also, the design of the hood will allow you to run 4 100 watt CFL's. If you can overcome the heat factor and still keep the humidity above 50%, well, the additional light will only do your plants good. You'll also want to put reflective material on at least the back glass, sides also if you can. Mylar is best, also great is 'foil' wrapping paper. If there is a grow shop in your area, they will sell black/white plastic that is a very good reflector. Lastly, you can always use aluminum foil.
    To help with humidity, your local tropical fish store should sell a under gravel filter that makes a great false bottom. Put a 1/2 of water under the filter with an airstone or perferated airline to bubble and it will really help with raising humidity and add airflow. This thread on how I did my setup may give you some ideas.
    Be sure to post some pictures when it's up and running.
    Tom

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    Thanks for the input thbjr and everyone else. Yes I'm gunna get some nice white paint for the inside above the lights. Thats a great idea also, I will add 2 more lights in there. I think the 2 small fans ( one in one out ) will be able to keep it cool but yet keep it warm. I have to put them near the top in the back so they are out of sight.

    D_muscipula
    idk if this makes any difference but the fan blows air into the tank, there is another hole on the other side of the lid that has no fan and the warm air natural rises out f the tank.
    It's very humid and gets natural ventilation I have hamata growing in there now and here is the recent pics
    Will I get away with one fan and one vent hole? or with 4 bulbs in there will I need both fans?

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