I was thinking the same, although I thought maybe using two fabric bags, one with a hole for the stem. Tying the nylon at the stem would probably be snugger.
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I won the battle 
just with mosquito bits and sticky traps ā¦ 
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Iāve been using mosquito bits mixed in the bottom and top of my containers for a while. Now it seems I may have made my population of gnats resistant to it, or the bits are buried too deep in my containers. Does the excel work as well in soil as your hydro/coco? @JoeCrowe Any issues with using it (glutaraldehyde) in bloom?
It seems glutaraldehyde is used in aquaponics, but as said before, eating and smoking are different things.
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Heāll likely have some issue with it, because I recommended it. Medical sanitizer poison! Haha.
I use it seed-harvest now. It will probably work fine in soil, but itās also a disinfectant, so if youāre doing the organic thing it may not be what you want.
For soil I see guys using mesh bags tied around the pot, like those 5gal paint strainer mesh bags.
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Throughout veg I just spray with flying skull nuke-em(citric acid solution supposedly fine in flower but I havenāt had to try it in flower. Worked great as a preventive though. Iām a kinda messy guy and had no bugs in my grow.
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Avoid skin contact with Glutaraldehyde. Wear personal protective equipment made from material which can not be permeated or degraded by this substance. Safety equipment suppliers and manufacturers can provide recommendations on the most protective glove and clothing material for your operation.
It may be necessary to contain and dispose of Glutaraldehyde as a HAZARDOUS WASTE. Contact your state Department of Environmental Protection (DEP) or your regional office of the federal Environmental Protection Agency (EPA) for specific recommendations.
Personally, I just use a layer of sand to snuff them out.
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A) sand works about as well as BTIā¦not at all
B) Iām using an aquarium product called Excelā¦itās a diluted solutionā¦not pure glutaraldehyde
C) You can use it with very sensitive fish and inverts and plantsā¦itās safe.
lol copy paste a warning label but know nothing about it
FWIW @Seamonkey84 I use 1mL/gal of Excel every feed every time and I havenāt seen a single gnat in over a year. I noticed the gnat preventative effect after trying to see if its āliquid CO2ā effects worked on terrestrial plants, too. Also a mild algaecide in aquaria.
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The best way I have found to get rid of them is to prepare the water I am going to use to feed the plants the night before by placing my mosquito dunks in the water and letting it sit over night. After plants drain place tape over the drain holes, use fly strips near the light and put sand on top of my soil.
This distrupts their complete life cycle, within a week you shouldnāt see anymore.
Just my way but I have had good resultsā¦ā¦
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If you check out my grow system, thatās really how I snuffed them out. They have no place to live.
Yep if you just use sand on top they will go in the drain holes and lay their eggs, tape them up they canāt lay the eggs there and the sand tears their bodies up so canāt go in that way to lay eggs. Their life cycle is only about 72 hours or so it just plain kills them off and no new ones to take their place,
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Thatās be Fe III though, which isnāt very usable by plants, you want Fe II, which is yellow.
Spinosad works great on them, captain Jackās dead bug. And I havenāt tried it yet, but Iāve been thinking about mixing perlite and de and using it like a mulch. It should just shred and gnats trying to go through it.
I have decided to simply accept them and pick them out of the buds when they get stuck there. Tweezers can make it easier. Spending a little extra quality time with the plants, inspecting and appreciating the glory unfolding. Thereās many advantages to only growing a plant or 3 at any given time.
Also the larvae help break down the topdressing, theyāre like worms, enriching the soil.
Should but doesnāt.
Growhard (he used to be on here) had like 2" of gnat nix on top of his pots and it didnāt even seem to put a dent in them. Like oldjoints said, theyāll just go through the drainholes. Maybe if you had fabric pots or had a way to truly seal points of ingress like the bags you could stop themā¦but theyāll come right back. Wet soil with organic amendments are like Club Med for fungus gnats.
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I do use fabric pots, thatās why I was thinking it could work. Then just bottom water for a week or 3
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Microbe Lift BTI added to your res is all your need to get rid of any flyers. Its the same active ingredient as Mosquito Dunks just more concentrated and effective. You will have to wait out the life cycle of the gnat but after about 2 weeks you will never get them again if you add Micro Lift to your res once a week.
6 drops per 100 gallons of water. Cheap, low application rate and very effective.
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vernal manā¦ the problem is the things you said have cost your credibility. You have to at least act like you care about their safety. Iām not sure if youāre reading this post like Iām being a turd, or if you think itās the truth. shrug
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What is the exchange rate of Joey Credibility Bux to monopoly money?
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It depends on who Joey is buxinā
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no, not with me, Iām not dealing in credibility bucks. The buck stops with the growers here, not with me. Trust is earned.
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Common disinfectants you hadnāt heard of yesterday now also bad. vernal bad. yawn.