Gnats in the grow tent help please

K

Kush2180

Active Member
I would advise not putting a layer of sand on top as it attracts powdery mildew, especially if your RH is above 60%. And just know if your going to use Neem oil that it fucking STINKS! I couldn't enter my grow room (bedroom) for days, I slept in my lounge because of the smell. Maybe its just me :)

Aside from the powdery Mildew and the stink, using sand and neem oil did fix the gnat problem.... I think I would have preferred the gnats :D
 
intenseneal

intenseneal

Well-Known Member
Ok I hope I got my gnat issues licked. Here is what I did. I first emptied out my grow space and took all plants outside. Cleaned with bleach in inside of the grow space the wiped down with a wet paper towel. I then took all the plants and dumped the crappy soil and replaced as much as I could with Fox Farm soil. Along with the soil replacement I mixed in Green Cure Fungicide to kill the fungus in the soil. I found in each pot white and a brown/orange fungus growing. All my plants have very small root balls and are growing slowly and this must be why. Then everything went back into the now sterile grow space, oh I killed all the bugs in there as well before putting the plants back in. I then put a slice of potato in each pot and left them overnight. 24 hours later I have not seen 1 gnat.
 
dbkick

dbkick

Well-Known Member
intenseneal said:
Ok I hope I got my gnat issues licked. Here is what I did. I first emptied out my grow space and took all plants outside. Cleaned with bleach in inside of the grow space the wiped down with a wet paper towel. I then took all the plants and dumped the crappy soil and replaced as much as I could with Fox Farm soil. Along with the soil replacement I mixed in Green Cure Fungicide to kill the fungus in the soil. I found in each pot white and a brown/orange fungus growing. All my plants have very small root balls and are growing slowly and this must be why. Then everything went back into the now sterile grow space, oh I killed all the bugs in there as well before putting the plants back in. I then put a slice of potato in each pot and left them overnight. 24 hours later I have not seen 1 gnat.
Click to expand...
you did nothing to kill the larvae in the soil?
 
budzrus

budzrus

Active Member
Hey all thanks for the help I really appreciate it. Someone said to cover the top of my soil with sand. Well it ended up I had no sand and no way to get any. I did however have some DE and put a layer of that on my soil. I immediately noticed the gnats were dying. As for watering I have learned to make sure that the soil is dry before watering again. I don't see any fungus so I think I caught this problem at the start. I can only hope. Anyways thanks again all.
 
sworth

sworth

Well-Known Member
LeafGnosis said:
going through this now myself. I have goNats and am drying out my soil. The funny thing is, I have put a bowl of water down with a sponge to help on humidity and when I look in the bowl I see more gnats in there than on my fly trap paper lol... though the bottom of the bowl has some soil... but soaked so I am not sure what attracts them to the water but it seems to be killing two birds with one stone :)
Click to expand...
There could be something in this. It's a herb version of a beer slug trap in the vegetable plot, I'm going to put a cup of watery molasses in my flower tent, and see how it goes.

To quote the great William Shakespeare;

the bard.jpg

"Verily; those fucking gnats pisseth me right off!"
 
LeafGnosis

LeafGnosis

Active Member
sworth said:
There could be something in this. It's a herb version of a beer slug trap in the vegetable plot, I'm going to put a cup of watery molasses in my flower tent, and see how it goes.

To quote the great William Shakespeare;

View attachment 2371370

"Verily; those fucking gnats pisseth me right off!"
Click to expand...
Love the Shakespeare quote!!!
Let me know, cause I have molasses to add to a water bowl myself.. will be checking!:blsmoke:
 
haight

haight

Well-Known Member
intenseneal said:
Ok I hope I got my gnat issues licked. Here is what I did. I first emptied out my grow space and took all plants outside. Cleaned with bleach in inside of the grow space the wiped down with a wet paper towel. I then took all the plants and dumped the crappy soil and replaced as much as I could with Fox Farm soil. Along with the soil replacement I mixed in Green Cure Fungicide to kill the fungus in the soil. I found in each pot white and a brown/orange fungus growing. All my plants have very small root balls and are growing slowly and this must be why. Then everything went back into the now sterile grow space, oh I killed all the bugs in there as well before putting the plants back in. I then put a slice of potato in each pot and left them overnight. 24 hours later I have not seen 1 gnat.
Click to expand...
Give it a week or two and you'll see them again.
 
GreatwhiteNorth

GreatwhiteNorth

Global Moderator
Staff member
I've always been a fan of the Diatomaceous earth and sticky trap solution, but a lot of really good advice here.
 
LeafGnosis

LeafGnosis

Active Member
hrm.. where does one obtain such material and what is the soil/DE ratio? I would love to use that on my next grow!
 
calicat

calicat

Well-Known Member
You could also use nematodes specific to be as predators to fungus gnats that exact your revenge on the larvae.
 
Ringsixty

Ringsixty

Well-Known Member
budzrus said:
Hey all I have a question I hope someone can answer for me. My grow tent has a gnat infestation. Will the gnats hurt the plant and what is the best way to get rid of these things? The plant does not seem to be affected by them by they are a nuance. Thanks for your help in advance.
Click to expand...
There are a few ways to get rid of those pesky little bastards. Natural and chemical.
I have found that by using Fabric planters is the way to go. Why you might ask? Well, it because those little bastards are just under the surface of your soil. When the top layer of the soil stays damp for a long time. Which it does in plastic pots. Those guys just keep fucking and laying eggs.
The key is to break that cycle.
With a fabric pot. The soil drys out quicker and so, helps breaks the cycle naturally.
My grows are 100% Gnat free..:mrgreen: May it stay that way.

Try it, you'll like it.:peace:

Good luck
 
blindbaby

blindbaby

Active Member
i have been "cooking" a metal pans of my soil, in the oven, at 250-275 degrees, for like 40 minutes. this kills 99% of the gnat larvae/eggs, and this is the NUMBER ONE help i have found. i still, when watering in new plants, to add some gognats (cedar oil) to the water. if any still are left, add some 3% peroxide to the water, just before watering. this will not harm plants. all it is is water and oxygen. but it kills gnat larvae. i do also use the yellow stickys. obviously, i need to cook soil a bit longer. this may harm the mycortizae, but, i use fox farms kangaroots, or tea, that is nothing but good bugs!! it replentishes it all. so no worries.
 
You must log in or register to reply here.
Top