Fungus gnat experiment #569

[Star Dog]

I don't wtf to think that's another 3 gnats this morning a cursed pair was in coitus, jeez that's close!

There's none in/around the pots or tent area I couldn't find one outside the tent if my life depended on it the fkrs are still hatching inside I'm 99.999% certain?

If I could turn back the clock I'd try smoke bombs on them, I've read recently they kill eggs to adults and continue to work for a bit after treatment.

They're only £3.50 so I picked up a few to try.

I've put soil from greenhouse pots that's gnat infested in a bucket and covered it I just need to wait now to see gnats then I'm smoking it to see if that kills them off completely?

Fwiw the bag I sealed on or before 2nd Oct hasn't hatched anymore gnats since.

 

[Drop That Sound]

Effects of ethylene oxide on soil microbial content and some soil chemical characteristics - Plant and Soil

The effects of ethylene oxide (EtO) on survival of soil microflora and on selected chemical properties of a sandy-loam soil were examined.Soil sterilization was achieved after 8 hours exposure to EtO. Ethylene oxide treatment increased soil pH and organic matter content. Extractable Mn and Fe...

link.springer.com

Abstract
The effects of ethylene oxide (EtO) on survival of soil microflora and on selected chemical properties of a sandy-loam soil were examined.
Soil sterilization was achieved after 8 hours exposure to EtO. Ethylene oxide treatment increased soil pH and organic matter content. Extractable Mn and Fe slightly increased whereas P content decreased. Total N was not affected by the treatment.

Ahhh, good 'ole ethylene oxide.. one of the most toxic man made substances ever made, and still widely used today for sterilization of medical equipment and some foods, etc..

Still, takes at least 8 hours to effectively gas out all the life forms in the soil..

 

[Star Dog]

I tried ipa @20% on larvea which appeared to kill them now I'm wondering if I really just drowned them?

I'm trying 20% ipa again so after applying it I seen a larvea surface which I caught, I tried 20/40% on it (without drowning) but it was still able to move so I tried 99% that killed outright, 60% ipa seems the next logical but I needed done by this point.

I gave the plant producing most gnats a rinse with 99% ipa for about 5 minutes then rinsed it away, not killing or wilting the plant would be a good start, let's see what happens?

Everthing I'd observed suggested they don't mate stuck inside the bag but then yesterday I killed a mating pair so that's quite a contradiction, so how are they not multiplying in the sealed pots?

 

[medidedicated]

I tried ipa @20% on larvea which appeared to kill them now I'm wondering if I really just drowned them?

I'm trying 20% ipa again so after applying it I seen a larvea surface which I caught, I tried 20/40% on it (without drowning) but it was still able to move so I tried 99% that killed outright, 60% ipa seems the next logical but I needed done by this point.

I gave the plant producing most gnats a rinse with 99% ipa for about 5 minutes then rinsed it away, not killing or wilting the plant would be a good start, let's see what happens?

Everthing I'd observed suggested they don't mate stuck inside the bag but then yesterday I killed a mating pair so that's quite a contradiction, so how are now multiplying in the sealed pots?

Just to recap, that plant you posted on like page 4 or 5 that is in coco? It was sealed from the very beginning since planting like Im now trying? Whats ipa, not isopropyl is it? I get my athena ipm today.

From rereading page 4 or 5 you think they can only last 7 weeks dormant as eggs? Does this mean you think dry brick coco should be good? Should I still treat it with athena ipm?

Asking too many questions lol but thats all I have for questions. If athena ipm dont work as strong as I thought it would maybe debydrating them and/or freezing/baking them to death would help.

Ill need like 4-7 weeks of no gnats spotted to start claiming some success. Really its few weeks into flower in a warmer room that I see them just 2 wks into flower.

 

[conor c]

I tried ipa @20% on larvea which appeared to kill them now I'm wondering if I really just drowned them?

I'm trying 20% ipa again so after applying it I seen a larvea surface which I caught, I tried 20/40% on it (without drowning) but it was still able to move so I tried 99% that killed outright, 60% ipa seems the next logical but I needed done by this point.

I gave the plant producing most gnats a rinse with 99% ipa for about 5 minutes then rinsed it away, not killing or wilting the plant would be a good start, let's see what happens?

Everthing I'd observed suggested they don't mate stuck inside the bag but then yesterday I killed a mating pair so that's quite a contradiction, so how are now multiplying in the sealed pots?

Really strong chill powder like Carolina reaper chilli powder for example and water idk if you tried that at this stage might be worth a try might not kill em it should push em out the dirt though

 

[Star Dog]

Just to recap, that plant you posted on like page 4 or 5 that is in coco? It was sealed from the very beginning since planting like Im now trying? Whats ipa, not isopropyl is it? I get my athena ipm today.

From rereading page 4 or 5 you think they can only last 7 weeks dormant as eggs? Does this mean you think dry brick coco should be good? Should I still treat it with athena ipm?

Asking too many questions lol but thats all I have for questions. If athena ipm dont work as strong as I thought it would maybe debydrating them and/or freezing/baking them to death would help.

Ill need like 4-7 weeks of no gnats spotted to start claiming some success. Really its few weeks into flower in a warmer room that I see them just 2 wks into flower.

Hey bud, yes those pots are coco fibre, i put the pots in bags 2nd October and also sealed up that other bag, I was basing 7 weeks on the time they've been sealed but idk what stage I sealed them in at so I'd add a few weeks to be safe.
(Ipa = Isopropyl alcohol)
Coco ime hasn't ever given me gnats idk the reasons for that but I've grown a few years without ever dealing with fungus gnats.

My problem is also in flower where it's warmer and generally better managed they multiply 100 fold in no time.

I received those paint bags so I'm going to put the plants in them over the weekend and maybe start cloning replacements idk?

 

[Star Dog]

OK so I wouldn't go down that road 99% ipa for 5 mins isn’t looking great after 12 hrs.

I'm super pissed at myself for being a jackass, I sealed pots during last crop.

Instead of taking care and paying close attention I opened them like a neanderthal then didn't even test the coco for larvae, that would've been a good indicator for long term after covering pots?

 

[Star Dog]

I got another gnat today I'm sick looking at those things but they can't last much longer surely.

I got paint bags to try then decided they're fine when I went to order more I seen these 120 micron with a tie ready to use and they're a closer size to my pots.

My tent is filtered but if it wasn't I'd arrange some of those paint bags over the inlets to stop any bugs getting in.