Help...fungus gnats

I’m seeing a few fungus gnats in my tent is it safe to water with a mix of h202 and what ratio will work best going on 4th week of veg. Growth seems to have slowed down…will this help me?
GM is Soil
2 blk bry kush
3 OG kush
1 banana kush

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here is a great article with many other options. How to Control Fungus Gnats and Damping Off Organically


Thanks keithl…this is a good read

@JimmyBeam That IS a great article on controlling gnats . Myself and a couplother growers are using Gnat Nix . It works very well at keeping them away . No chemicals .

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Gnat Nix has worked for me in the past :v::bear:

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Thanks to all for your input…it is appreciated!

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First I’ll welcome you to ILGM " WELCOME RIPPER "

iWhat is h202 and what type of soil are you using ? and a couple of pic’s would help,to

Fungus Gnats

Fungus gnats like to feed on roots of the plants and organic matter. Adults
and larvae live in moist, shady areas. The adults lay there eggs on top of
the soil, near the base of the stem and takes about 4 days to hatch. The
larvae will start by eating the root hairs of the plant then working their
way up the plant, Fungus gnats like to eat organic matter so they will be
stealing away nutrients from your plants, so its best to get rid of them
completely. [color=red. Plants growing in rock wool are more prone to getting
a more severe infestation than plants growing in soil. If your plants are
affected during late flowering or close to harvest, please try to use the
safest means of control to be safe to your health.[/color]

[color=red]Prevent and Control

Prevent indoor entry of gnats by making sure there is no open windows open
without screens on. Aug is a bad time for them as they are worst that time
of the year.

Put sticky traps on the soil surface to trap the gnats

Put potato slices on the surface of the soil. The larvae like it and will
be drawn to it… After about 4 to 5 days, remove the potato slices with the
larvae. To get rid of them you can do a lot of things like either use a NO
pest strip, neem oil or putting sand on the surface of the soil will suffocate
the eggs and get rid of them as well. Tobacco juice kills them, and works well
for re-occurrences!

They can be in or on the soil and can fly. In order to get rid of them you
can use neem oil, sand or perlite on the surface again kills them, and no pest
strips catch the ones that fly. A chemical product called Zone works very well
and is very powerful and works well in Hydroponics/Aeroponics!
Other Products which can be used in Hydroponics/Aeroponics and soil are:

Safer Yard & Garden Insecticide

GNATROL( used in Hydroponics/Aeroponics in the water as well as soil),
Safer Sticky Stakes,
TR-11000 Pyrethrum.
Mosquito Dunks

Organic Control

Pest Oil
Neem Oil
Hot Pepper Wax
Doc’s Neem Pest Soap
Sticky traps
Safer’s Insecticidal Soap
Neem Oil
Neem 2

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I used yellow traps and nematodes that were specifically for gnats. It seems to have slowed them down. You using soil

Thank you very much for the welcome, top of the day to you… Hydrogen Peroxide is what I was wondering about but I ended up treating with Neem extract oil from after researching thru some links sent by fellow growers…thanks to everyone for the help…

YA OK I should or really did know but my brain wasn’t working… any way your very welcome and keep this in mind when spraying your plants … ok

-Despite it noting being toxic, NEVER spray the buds in advanced state of flowering, in case of having your plants at this phase, since Neem oil could affect the flavor besides exerting a negative effect on the Trichomes.

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Yes Shaungray7 I have my girls in soil

Thanks again for making me feel welcomed…
Starting Week 4 of veg nothing in flower or preflower. And I mostly just soaked the soil with the mixture…

The BT-i bacteria in Mosquito Bits (or dunks) destroys fungus gnat larvae as well as mosquito larvae. It is a useful tool in your battle to break the longggg life cycle of the little buggers.

I still apply it periodically as a top dress, even though I haven’t seen any in ages.

Sticky traps for the adults, Mosquito Dunks for the larvae - you’ll get there.


Bti Bacillus thuringiensis israelensis

you need to get the above product, you can get it on ebay mix a strong solution then PH the water to your requirements it will kill the larvae worms which eat the roots of your plants, you need to do it every watering until your ontop of them, i dont have any probs now but still use it at least once a month just in case.

Kill Fungus Gnats with 1 oz GNATROL BTI bacillus thuringiensis israelensis

Brand new

From United States

Seller: organicbti (4,768) 99.7%

Buy It Now

Item: 264084569719

sorry not allowed to put the ebay link on but the sellers details are above and they are in the USA
also if you have any other indoor plants treat them also.
Compliment this with yellow sticky boards and topdress with gnatnix which is a recycled glass.

Thanks for the info…
Happy growing

Hey MattyBear what is your opinion on the hlg 135w qb v2 kit from amazon for $189 ? And it’s 3000k is that what I would need for flowering
Thanks for any input on this

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That’s a great light for a 2x2 tent and 3000k for flower is great :v::bear:

Do you think 2 of them along with some supplemental lighting would flower a 4x4

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Sticky traps and nematodes did it for me

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