Re: Fungus Gnats and CO2
John Phillips (phillips@library.ucsf.edu)
Fri, 3 Mar 95 07:47:52 CST
In Message Thu, 2 Mar 1995 18:13:21 -0800,
Harold Slater <hslater@io.org> writes:
Hi Roo! Is tonight an eat-at-home watch-X-Files night? Or did you want to
go out? I'm pretty tired and I have two EC's that will keep me till 7:30.
What say you? I love you, PW
PS. If you think I'm out of hand w/ my plants, read the letter below!:
>
>
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> Hello all,
> just a few notes on fungus gnats and CO2. I have controlled
> fungus gnats succesfully with the use of beneficial nematodes. The
> product I use is called BioVector. I buy it in the smaller version
> (bottle size) called Biosafe. It is the nematode Steinernema
> carpocapse. It works by entering the fungus gnat larvae and releasing a
> bacteria which kills the larvae. What's great about it is that it
> doesn't harm any other beneficial bug or any larger animals. I'm not
> sure where to get it in the U.S. but I get mine from Plant Products
> just outside Toronto, Canada. You can try calling them at (905)
> 793-7000 they might know where in the U.S. to get it. It works very
> well.
> I have used the Yeast method for CO2. I originally made my little
> glass fermenter for a tropical fish tank (for aquatic plants). It was a
> 1.5L glass bottle with a rubber stopper with a 1/8" glass tube attached
> to a air line tube. I used one small packet of yeast to 1/2 cup refined
> sugar to 1/2 litre of water. It produces CO2 for about 7-10 days.
> It's very cheap to run. I let it just diffuse amongst plants that
> were growing under lights.
> I once saw an ingenious setup by a plant hobbyist using marble chips
> and muriatic acid. It used an I.V. bottle that released a single drop of
> acid every 30 seconds or so. The acid/marble reaction produces CO2 in
> abundance. He used a little 1" computer fan slowed down to a very slow
> speed with resistors to slowly diffuse the CO2 amongst his plants.
> It worked amazingly well and was completely safe.
>
> harold
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John Phillips
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