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emergency !!! please help !!!
- Thread starter 420blunts
- Start date
fear.loathingSF
Member
I just defeated fungus gnats a few weeks ago. You need something to kill the larvae and something to kill/prevent the gnats from returning to the substrate to reproduce more. Diatomaceous earth and predatory nematodes work welll to kill the larvae. I used yellow sticky traps near the soilto kill gnats and covered the soil in a layer of perlite to prevent any from getting to the soil. I was getting a little discouraged at first, but once I did what I just explained, they seemed to disappear very suddenly after about two weeks. Haven't seen any since...
Im not sure how this info might apply to a rockwool grow, but good luck and I hope this helps.
Im not sure how this info might apply to a rockwool grow, but good luck and I hope this helps.
kushism
Member
follow pete's advice, and if they are indeed fungus gnats, they should slowly die off. there are pests out there that can be confused with fungus gnats.. root aphids for instance..
good luck
oregon bob
Member
Just an aside, but fertilome is now making the bti-k, which you can get at the local nursery for much cheaper. Both utilize the bti. Best to all.
btk and bti are 2 different subspecies of the Bacillus thuringiensis naturally occurring soil bacterium.
They attack different pests. You want Bti for gnats.
BTi (Bacillus thuringiensis subspecies Israelensis strain EG2215) is for control of larvae of mosquitos, fungus gnats and black flies of the order Diptera
BTk ((Bacillus thuringiensis var. kurstaki) is only effective against certain caterpillars.
There are over 20 different varities of Bt, each targeting certain pests.
They attack different pests. You want Bti for gnats.
BTi (Bacillus thuringiensis subspecies Israelensis strain EG2215) is for control of larvae of mosquitos, fungus gnats and black flies of the order Diptera
BTk ((Bacillus thuringiensis var. kurstaki) is only effective against certain caterpillars.
There are over 20 different varities of Bt, each targeting certain pests.
oregon bob
Member
Wasn't aware of this, just thought the k variant was but another development w additional insect effectiveness. Cool, very cool.
thanx everyone who dropped in with there input. i just got done with my first application of gnatrol today. i mixed 5 ml per gallon. i used plain ro water with it. ph was at 5.9 after mixing. will go buy a bunch of yellow sticky tape when store opens. got 2 no pest strip up. turned off carbon filter for now.
hey there headypete, since i handwater the rockwool everday. i mix just enough for the day. how often would you recommend me using gnatrol ? also will it be okay to add it with my nute mix ?
hey there headypete, since i handwater the rockwool everday. i mix just enough for the day. how often would you recommend me using gnatrol ? also will it be okay to add it with my nute mix ?
I would apply a second dose in 7 days to get the new hatchlings that weren't killed off in egg form. It is perfectly fine to add to your nute mix. Just adjust ph at the end.
I used Aquabac (marketed for mosquito control) and just shook some granules into my water container and let sit overnight before applying. This allowed the bacteria to reanimate and colonize the water, before applying to plants. Never had gnats again.
