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Bleach in coco...fungus gnat larvae
- Thread starter Raw710
- Start date
troutman
Seed Whore
Bleach sounds harsh.
Hydrogen peroxide works nicely and I have tried this.
https://www.howtogetridofgnat.com/2...gnat-using-hydrogen-peroxide-insecticide.html
Hydrogen peroxide works nicely and I have tried this.
From here:
https://www.howtogetridofgnat.com/2...gnat-using-hydrogen-peroxide-insecticide.html
Bleach sounds harsh.
Hydrogen peroxide works nicely and I have tried this.
From here:
https://www.howtogetridofgnat.com/2...gnat-using-hydrogen-peroxide-insecticide.html
I don’t feel like h202 kills the larvae
troutman
Seed Whore
It does.
SnickleFrits
Member
H202 will def kill everything along with your bennies. Just did it to kill springtails
At what application rate?
troutman
Seed Whore
Don't use it at 35% strength or you'll fry your plants
I listed the way to dilute it in post #2 of this thread.
Just use enough until it comes out the bottom of the pots.
RumblefishTwist
Member
Just make sure to dilute the H2O2. I flushed my coco with undiluted 3% solution and it has pretty much killed the plants from the inside.
MickFoster
Active member
I have tried the 4:1 H2O2 method and it didn't even affect them. I did a drench with Gnatrol BT 3 times in 10 days and it killed them dead.
Gnatrol is pro grade stuff. I get them periodically in my organic soil mix. A single application to wet the soil at 1 tbsp/gal whups the hell out of them. 3 applications a week apart is recommended for heavy infestations.
I tried to eradicate them completely a couple of times but it's just impossible using organic ingredients. When I see more than a few on the fly strip in the enclosure it's time for a beat down.
Maybe I will have to try the gnatrol. Is it expensive? Have you ever tried tanlin?
Yea do you think the gnatrol works good as a preventative measure? And how long does it stay alive in the soil if it does?
Yea I’m sure it did a number on them. Did they ever recover?
RumblefishTwist
Member
Nope, totally dead. Stupid mistake on my part.
The really sucks how old were they? Was it early enough where it wasn’t that costly?
Gnatrol isn't really expensive-
https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=gnatrol
500g is ~1 quart, 70 tablespoons or so. 1 tablespoon in 1 gal of water treats three or four 5 gal pots effectively.
I suppose it could be used as a preventative on a schedule but I've never really used it that way. Once I found gnatrol I quit looking for anything else. Works great.
