Fungus gnats in coco

Herb potman · Jan 23, 2021

What

bEelzeBosS said:
The whole reason I switched to coco 6 years ago was because of fungus gnats, I could slow them down fine but never completely killed them off until the switch. I've never had a single one since switching, I didn't even know it was possible in coco.

what nutes do u use and do u mix anything with the cana. Or just straight cana

Herb potman · Jan 23, 2021

bEelzeBosS said:
FYI if you cant find the bagged Canna Coco locally these bricks are just as good and way cheaper due to ease of shipping. I rehydrate mine with RO water, with CalMag and Rhizotonic added.

Do u only do that to the brick cana coco or bag one aswell

Herb potman · Jan 23, 2021

U

twentyeight.threefive said:
View attachment 4805112

Do U mix anything with it or go straight coco. And what nute line do U recommend

bEelzeBosS · Jan 23, 2021

Herb potman said:
What

what nutes do u use and do u mix anything with the cana. Or just straight cana

I use Canna's Coco nute line. I grow in 100% coco, I know a lot of people add perlite but its honestly not needed at all.

Herb potman said:
Do u only do that to the brick cana coco or bag one aswell

I treat the bagged coco the same way after adding it to my pots. I know it says it comes pre-rinsed but I still like to give it a good flush with the CalMag/Rhizotonic anyway.

bernie344 · Jan 23, 2021

bEelzeBosS said:
The whole reason I switched to coco 6 years ago was because of fungus gnats, I could slow them down fine but never completely killed them off until the switch. I've never had a single one since switching, I didn't even know it was possible in coco.

I got a few in canna coco not really a problem.

Midwestsmoker419 · Jan 23, 2021

bEelzeBosS said:
I use Canna's Coco nute line. I grow in 100% coco, I know a lot of people add perlite but its honestly not needed at all.

I have seen it done both ways and here soon will do a side by side and see the pros and cons

Cvntcrusher · Jan 23, 2021

If you run coco dont use fabric pots and don't leave any water in the saucer and you won't get gnats.

I run coco in 3 gal fab pots and the salt buildup on the outside of the pots breeds gnats lmao

Herb potman · Jan 23, 2021

I wana water every other day so I figure no perlite and it will stay wet a bit longer. And bigger pots

bEelzeBosS · Jan 23, 2021

Midwestsmoker419 said:
I have seen it done both ways and here soon will do a side by side and see the pros and cons

I've done side by side with clones twice several years ago...the ones without perlite seemed to respond better, and buds were a bit denser. Not a huge difference but it was noticeable. The perlite is just wasting space the roots could be filling. I do put a layer of perlite at the very bottom of my pots to assist with draining but even that isn't necessary.

Cvntcrusher · Jan 23, 2021

Herb potman said:
Can you recommend and brand of coco that’s not in brick form. For my first coco attempt I want to keep easy. I was think cana coco and there A B nute line to keep it simple

Mother earth coco/perlite 70/30 mix.

These are 75 days from sprout. In ME coco. 3gal fabric pots. Halfway through week two of flower.

Started feeding silica when I flipped. Been feeding calmag and nutrients since day 3 from sprout.

Herb potman · Jan 23, 2021

Cvntcrusher said:
If you run coco dont use fabric pots and don't leave any water in the saucer and you won't get gnats.

I run coco in 3 gal fab pots and the salt buildup on the outside of the pots breeds gnats lmao

How u solve issue

Cvntcrusher · Jan 23, 2021

Herb potman said:
I wana water every other day so I figure no perlite and it will stay wet a bit longer. And bigger pots

The point of coco is to keep it saturated. You don't want coco to get dry at all.

Herb potman · Jan 23, 2021

Cvntcrusher said:
If you run coco dont use fabric pots and don't leave any water in the saucer and you won't get gnats.

I run coco in 3 gal fab pots and the salt buildup on the outside of the pots breeds gnats lmao

What pots u suggest

Cvntcrusher · Jan 23, 2021

Herb potman said:
How u solve issue

Don't use fabric pots. Otherwise you're using peroxide every week or two to kill larvae and using sticky traps once a week to catch the gnats.

Or keep the fab pots clean but thats hard to do when you scrog since you can't turn the pots.

kroc · Jan 23, 2021

I got rid of them using a bit of hydrogen peroxide in my res on a few waterings

Herb potman · Jan 23, 2021

Cvntcrusher said:
The point of coco is to keep it saturated. You don't want coco to get dry at all.

U don’t think I can accomplish with 5 or 7 gallon pots ?

Cvntcrusher · Jan 23, 2021

Herb potman said:
What pots u suggest

https://www.amazon.com/dp/B0098LYC9C/ref=cm_sw_r_other_apa_i_rVldGbXT0KDEP?_encoding=UTF8&psc=1

But the bigger ones. Make sure you have elevators and saucers.

bernie344 · Jan 23, 2021

Cvntcrusher said:
The point of coco is to keep it saturated. You don't want coco to get dry at all.

Why not

Cvntcrusher · Jan 23, 2021

bernie344 said:
Why not

Because its almost the same thing as hydroponics. It CAN get dry and you CAN water once a day. But you SHOULD be watering at least 2x a day.

Cvntcrusher · Jan 23, 2021

Herb potman said:
U don’t think I can accomplish with 5 or 7 gallon pots ?

I honestly have no clue.

This is how my next run will be.
2gal plastic pots.
10" saucer/elevators
Running 8-10 autos in a 4x4.
Coco is the medium.

Fungus gnats in coco

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