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Gozer_1

Mad science strikes again! I made a prototype zapper.

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After about a week of researching and thinking and reading some more I decided to try building a "zapper". I don't have any pest anemones but I've been looking for away to remove stray mushrooms without pulling the rock and chiseling them off. After all my reading and thinking I went out and got some supplies. I dug out some non-copper speaker wire and some used oxygen tubing out of my grandpa's garage. I purchased a 12V 600mA power supply, an on\off switch, marine epoxy, a carpenters pencil and some zip ties. I split the wire in to two individual wires and ran them through sections of tubing. At the end of one wire I attached a tapestry needle and pulled the wire back until 1\2 inch of needle stuck out of the tube. At one end of the other wire I attached a piece of graphite recovered from the pencil. This too I pulled back until only the graphite stuck out. With my electrode and anode in place I sealed both ends of the tubing with epoxy. I left my self more than enough wire at the dry end of the tubing to attach the power supply. To attach I simply twisted the positive (graphite) wire so that it would fit snugly into the center (positive) of the power supply plug. I taped it off and wrapped my other wire (needle) around the outer portion of the plug making sure the wires were well insulated from one another. I used zip ties to tie the two tubes together and let everything sit for a day. I haven't yet installed an on\off switch but have put the thing to use. Small mushrooms are gone in a day, the larger strays require a couple treatments. So far I've been zapping 3 or 4 every couple days and things are really looking good. I've seen no impact on water quality. It's not a cure for the bad maintenance that got me here but it certainly makes me feel better knowing I can get them back under control. Together with good water management and the new light bulbs I put in I think my mushroom woes are over.

Disclaimer: I was raised by an electrician and I have pretty good knowledge of electricity. Please do not try this unless you are completely comfortable. The power from the tool is not enough to hurt you but you must ALWAYS respect electricity especially around water. Leave enough wire to have a drip loop before the outlet and be sure to seal everything that may be exposed to water. Be safe Addicts but have some fun too!

Added some pics of the "device" and an area of aftermath. I noticed a bristle worm seemingly munching on the leftover shroom guts. Really shaky picture but you can see it fairly well. It's an area between some lavender shrooms and the overbearing reds.
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Updated 11-22-2010 at 06:18 PM by Gozer_1 (add pics)

Tags: mushroom, zapper
Categories
Electrical , ‎ DIY projects

Comments

  1. melev's Avatar


    We want some before, during, and after pictures!
  2. Sisterlimonpot's Avatar
    what's the distance between the anode and electrode?
    Are you stepping up the voltage or is it just 12 volts?
    How are you using the device? Are you sticking the needle into the pest and allowing the current to flow through the water as a medium between the graphite and needle?

    Please do explain......
    Thanks
  3. Gozer_1's Avatar
    The tips are maybe 3 inches apart. It doesn't matter a whole lot. Within a couple inches is good.
    The power supply I bought happened to be "universal". I could reduce the voltage but I went right for the gold and haven't tried lower voltages.
    I kind of stir the shroom with the needle and they are slowly reduced to white and red slime that I skim off the top. They're pretty tough little buggers. A 1 inch mushroom may take two doses over two days. I take it pretty slow though. A big mushroom makes a lot of slime! I believe it's the chemical reaction at the needle that does the deed. The bubbles it produces don't seem to harm other things. Only what the needle touches is "burned".
  4. Gozer_1's Avatar
    Here's a video of the first treatment on a fair sized stray. The shroom is just over 2 inches across. These have been overtaking some zoos. You can see the mess it makes but most of it floats to the top where I skim it off with a net. The rest seems to get cleaned up by the night crew. By tomorrow there will be a very unhappy bit of shroom left. My guess is this one will take 3 shots to clear completely. I'm told that a 24V power supply will make much shorter work of it.
  5. melev's Avatar
    You might consider cutting off the bulk of the mushroom, and then hitting the tissue left behind.
  6. Gozer_1's Avatar
    Indeed, that is a far superior method. I sliced off a large 4 incher and buzzed the remaining goo. The red portion of the shrooms is much tougher than the base portion. Thanks for pointing out the obvious thing I looked past. Much less slime and easily killed in one shot instead of 5.