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 Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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 Fungus gnats... 
#821629 - 12/03/16 01:24 AM (7 years, 11 months ago) |
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Well what I thought was fruit flies from veggie harvest and just molasses in my feedings causing them in my grow room turned out to be fungus gnats.. Jerks screwed up alot of clones and may loose some phenos.
Some tips
1. Let dry out  hard with clones so doesn't really help
2. Water with 1:4 peroxide regular 3% kills the larva maggots.
3. Layer of diatomaceous earth while not convinced it really kills bugs tottaly, deters them.
4. Sticky traps.
5. Prob best is the bacillus thuringiensis variety Israelis. Forgive spelling. But the stuff in mosquito dunks. Oh and look like mini mosquitos is how to tell them from fruit flies. Mix that up with water and water your plants.. do it after peroxide treatments as it would kill all the bacteria that will kill the bugs! Use dechlorinated aswell. Can also just mix in first cm or 2 of soil if u want aswell.
Hope gives jumping off point. Cheers
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 Deadkndys420
Registered: 08/28/12
Posts: 8,703
Loc: █████
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 Re: Fungus gnats... [Re: Theman]
#821633 - 12/03/16 10:41 AM (7 years, 11 months ago) |
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If you pasutize your soil you kill all the fungus flies eggs.
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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And kill all beneficial mycoryze in the mix lol. But so does peroxide just in top few cm...
Also watered with need just cause they passed me off and think there all gonzo.
Buggers tho larvae eating stem and roots on my clones and killed some..
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Deadkndys420
Registered: 08/28/12
Posts: 8,703
Loc: █████
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Re: Fungus gnats... [Re: Theman]
#821749 - 12/06/16 10:53 PM (7 years, 11 months ago) |
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Pasteurizing won't kill that off. Boiling water might. But definitely not pasteurizing.
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Sloppy
Be Positive
Registered: 06/27/16
Posts: 107
Last seen: 7 years, 8 months
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I had fungus gnats for the last 4 weeks of my grow. They were annoying, but not aphids or mites so I wasn't really worried. I layered DE and it made it subside a bit, but not really.
Boiling water into your soil? Sounds terrible.
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FOLLOW MY GROW!
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phychotron
Medicated
Registered: 02/17/11
Posts: 1,995
Loc: Earth (mostly) 
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Re: Fungus gnats... [Re: Sloppy]
#821815 - 12/09/16 06:56 PM (7 years, 11 months ago) |
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A layer of Diatomaceous earth turns to sludge as soon as you water and negates the desiccating effects. A 1" layer of sand will slow them down and allow for easier watering.
I got rid of fungus gnats when I stopped using soil/soilless mix. They come in the bags you buy. Later I thought I still had them but realized they were mature Thrips, which are easy to deal with.
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Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
 Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: phychotron]
#821824 - 12/10/16 12:17 AM (7 years, 11 months ago) |
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Ya and sucks for watering makes like a plug too.
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Chakanooga
Always Lmao
Registered: 12/16/15
Posts: 393
Loc: Wonderland
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Re: Fungus gnats... [Re: Theman]
#821830 - 12/10/16 02:44 AM (7 years, 11 months ago) |
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Sounds like a real problem. I see so many solutions, but which one is right.
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Scribbler
because i scribble
Registered: 10/04/14
Posts: 140
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Re: Fungus gnats... [Re: Chakanooga]
#821860 - 12/11/16 10:44 AM (7 years, 11 months ago) |
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There's no one right answer, but I would say sticky traps are good to deal with the already hatched flies and the mosquito rings are good for the larvae in the soil. Make sure the soil dries out too in-between waterings.
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: Scribbler]
#821882 - 12/12/16 08:07 AM (7 years, 11 months ago) |
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Use all of them! Lol 1 plant that's not in a Geo pot had larva in soil. There was few adults around and assume layed more eggs so hit again with peroxide and neem and later broke up a dunk of thuringiensis or whatever. Def got handle on them now as before I thought were fruitflies!
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GoonerHeClips
Stranger
Registered: 08/24/14
Posts: 380
Last seen: 7 years, 3 months
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Re: Fungus gnats... [Re: Theman]
#822170 - 12/26/16 09:11 AM (7 years, 10 months ago) |
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Quote:
Theman said:
Use all of them! Lol 1 plant that's not in a Geo pot had larva in soil. There was few adults around and assume layed more eggs so hit again with peroxide and neem and later broke up a dunk of thuringiensis or whatever. Def got handle on them now as before I thought were fruitflies!
Predatory nematodes, the only good solution. Ditch the rest of your so called solutions which don't work. Neem and peroxide are not going to work, for sure. The Bt is a pesticide that may work but didn't from my experience.
Beneficial Insectary has them, pay the money have them shipped overnight, water them in, and let those nematodes do their thing. Sand and DE are a waste of time too. Breathing DE dust is not good, that's for sure.
Another good addition is the Stratio-S mites aka hypoaspis miles. Well worth the money for fungal gnat as well as other soil pests.
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Sloppy
Be Positive
Registered: 06/27/16
Posts: 107
Last seen: 7 years, 8 months
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Quote:
GoonerHeClips said:
Quote:
Theman said:
Use all of them! Lol 1 plant that's not in a Geo pot had larva in soil. There was few adults around and assume layed more eggs so hit again with peroxide and neem and later broke up a dunk of thuringiensis or whatever. Def got handle on them now as before I thought were fruitflies!
Predatory nematodes, the only good solution. Ditch the rest of your so called solutions which don't work. Neem and peroxide are not going to work, for sure. The Bt is a pesticide that may work but didn't from my experience.
Beneficial Insectary has them, pay the money have them shipped overnight, water them in, and let those nematodes do their thing. Sand and DE are a waste of time too. Breathing DE dust is not good, that's for sure.
Another good addition is the Stratio-S mites aka hypoaspis miles. Well worth the money for fungal gnat as well as other soil pests.
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FOLLOW MY GROW!
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: Sloppy]
#822196 - 12/28/16 09:40 AM (7 years, 10 months ago) |
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Lol diatomaceous is fine to breath. 1000x worse is perlite.
Yes the worked.saw 1 or 2 fly in last week lol. In Soviet Canada it is pricey as not alot of people if any have them. Even in pet industry with there living biome terrariuma.
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phychotron
Medicated
Registered: 02/17/11
Posts: 1,995
Loc: Earth (mostly)
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Re: Fungus gnats... [Re: Theman] 1
#822199 - 12/28/16 11:19 AM (7 years, 10 months ago) |
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Quote:
Theman said:
Lol diatomaceous is fine to breath. 1000x worse is perlite.
Diatomaceous earth is NOT FINE TO BREATH. It causes respiratory problems when the fine powder gets into the lungs. Just because its food grade (able to put in your stomach) or that something is worse in contrast does not mean you should expose yourself to breathing its dust.
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Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: phychotron]
#822205 - 12/29/16 10:20 AM (7 years, 10 months ago) |
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Chronic exposure of any dust 100% is bad. My point is unlike perlite it doesn't have xl silica. There is some specific kinds of de that can be but not what is used for our applications.. inform yourself
Man this site has lost the misinformation mantra.
"In a study of workers, those exposed to natural D.E. for over 5 years had no significant lung changes, while 40% of those exposed to the calcined form had developed pneumoconiosis.[28] Today's common D.E. formulations are safer to use as they are predominantly made up of amorphous silica and contain little or no crystalline silica.[29]"
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phychotron
Medicated
Registered: 02/17/11
Posts: 1,995
Loc: Earth (mostly)
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Re: Fungus gnats... [Re: Theman] 1
#822209 - 12/29/16 01:54 PM (7 years, 10 months ago) |
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Just because something is safer in contrast doesn't make it OK. Walk out of a room you just dusted with DE and tell me you can't tell the difference in respiratory function. Permanent damage aside, you will notice something if you spent more than 5 minutes in there. It can also cause skin and eye irritation. And it doesn't matter if that's because of the chemical properties or physical size; you should AVOID exposure.
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Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: phychotron]
#822210 - 12/29/16 02:27 PM (7 years, 10 months ago) |
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Correct but I am making the point it is not harmful. U don't throw it in the air and in fact perlite is alot more prone to get airborne for me. That being said studies show its fine but ya forsure any dust is bad to breath... be it de or pollen or dust from vacume. Anyway don't spread mis information!
Yes like pyrethrin is fine to eat it's not fine to breath in. However I am not basing anything on that fact. I think u just assumed I thought that about food grade? Anyway I don't want to have a pis sing match, just want this site to be evidence based and stop misinformation! Your feelings how a room full of dust may be harmful is meaningless rhetoric when a study has proven that to be wrong even in such a "worst case".
Cheers
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phychotron
Medicated
Registered: 02/17/11
Posts: 1,995
Loc: Earth (mostly)
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Re: Fungus gnats... [Re: Theman]
#822211 - 12/29/16 08:00 PM (7 years, 10 months ago) |
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If you want to dust an area you'll need to throw it in the air. The evidence of irritation is in experience. I don't know how I can prove to you that I've noticed irritation after using it. It might have only been temporary and unobtrusive but it was real just after a few minutes.
Pepper spray won't cause any long term damage but that doesn't mean its fine to breath.
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Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein
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Theman
Stranger
Registered: 10/06/16
Posts: 344
Last seen: 4 years, 5 months
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Re: Fungus gnats... [Re: phychotron]
#822215 - 12/30/16 10:19 AM (7 years, 10 months ago) |
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Anyway not sure why ur throwing it in the air. But ya breathing dust in irritates. All I am saying is de itself is not harmful, science based. Period. So don't spread mis information.
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phychotron
Medicated
Registered: 02/17/11
Posts: 1,995
Loc: Earth (mostly)
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Re: Fungus gnats... [Re: Theman]
#822223 - 12/30/16 12:21 PM (7 years, 10 months ago) |
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How do you dust an area with DE?
if breathing in something causes irritation how is that fine to breath? I understand your point that there are more harmful version out there, that's not in dispute. If anyone needs to stop spreading sim-information its you.
"The amorphous form is only associated with mild, reversible lung inflammation."
http://npic.orst.edu/factsheets/degen.html
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Any help given is for educational purposes only. Its your responsibility not to break any applicable laws
Bamboo Bongs I make | Perfect Dry and Cure | Grapegod under LED
“Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune intoned in the distance by an invisible player.” ~ Albert Einstein
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