What light distance and height

[Desolate_Place]

There we go

 

[Desolate_Place]

Im not 100% if neem oil solution to soak the medium with seedlings is OK, good old google says not the best, especially if too concentrated.
Put up the sticky traps.

Hopefully the larvae dont kill the seedlings by eating all the roots as thats the main issue right now (that was another thing that killed a few last year for me, around that size too, just to put a downer on it).

Can't remember which member suggested it, but boiling water over the cup media to kill any possible eggs before planting as SOP should do the trick in future.

I’ll do the boiling water trick every time from now on before planting any more plants, thanks for mentioning

 

[itchybro]

Good to hear its working well for you.
Blumat looks cool - Does the water volume in the probe rez change much over time, look at it daily?

I was think I might grab suitable pot & media with probe in situ, drench & sit for an hour.
Note volume of water in & out (measured). The diff is water holding capacity (WHC) of given substrate/media.
Note probe readout & weigh the pot.
Start drying the pot until it loses 10-15% of WHC (water loss).
Note probe readout.
Should probably continue drying & noting probe readouts over a wider drying range I guess.
See if I can make any sense of it.
Not sure if my thinking is even correct.
Me overthinking, more than likely _ LOL

ps apologies OP 4 d derail

yes & no , the way the blumats work , meter or drippers ( aka carrots ) , they have a terracotta point which gets pushed into the soil , you can see it in any pic of a blumat , terracotta being porous , as the soil around the terracotta drys it pulls water out of the meter rez , as you call it , & v a v as the soil around the terracotta gets wet the opposite effect , the terracotta sucks water back in
there is no need to check the meter rez , just leave it in the soil & press the button when needs be to check moisture content of the pot

you can def setup a pot & probe if you like but without a plant growing in it that a root system is constantly changing from tiny seedling to large seedling to adult vegging plant to flowering plant the numbers you gather i don't think will correlate

Fuck I opened my cupboard and there’s gnats flying around everywhere and I supposed they’ve been in the soil the entire time, plant is like 7-8 days old. What do I do? I got Neem oil and sticky gnat traps should
I use them?

as Beil said using anything on young seedlings can be fraught with danger , the barrier stuff is prob the safest thing along with the sticky traps at this stage of growth , later on you can go a little harder & use things like neem oil &/or mustard seed meal
in the mean time i hope you've gotten rid of the offending plants under your desk , keeping in mind you can use them as subjects for future testing of pest reduction methods

 

[itchybro]

I’ll do the boiling water trick every time from now on before planting any more plants, thanks for mentioning

boiling water might not be the best choice for growing in a living soil

 

[Mellow oldfark]

Diamatacious earth would be the go to put a layer of in your pots.
Especially if you have a lot of gnats.
It kills them by physical mutilation.
Shreds them to bits with it's very sharp edges as they try to burrow down in the medium.
Fungas gnats invasion needs multi pronged defence strategy.
So diamatacious earth ,yellow card, and neem drench if plants are big enough .

 

[Desolate_Place]

boiling water might not be the best choice for growing in a living soil

I was thinking of mixing some compost in or that liquid that brings heaps of good bacteria back into the soil. I’m using mainly a potting mix consisting of heavy perlite and coco peat

 

[Desolate_Place]

I think I’ve largely controlled the issue now. The tent only had gnats in it because I put an already infected gnat pot into it for a day or so. My pot plant with the marijuana in it didn’t have any gnats in it beforehand as it was in they’re for months without a single gnat. Since removing the infected pot and the other ones from under my desk to outside. Haven’t seen any gnat in my room since and the trap only caught 1 overnight. This whole time I didn’t see any larvae in the weed pot either so I’m thinking I caught the issue early enough thst I should be okay now I think