Originally Posted by
Strider
I was going to say I can JUST spot and ID Fungus gnats with the naked eye, (Had em before) but then I clocked you said larvae....yeah no chance by eye
hard to be sure without pics as said, but if it was an infestation of grubs then yeah in coco i'd go for the HydroPerox wash, ideally having enzyme products on hand to add after to minimise the disruption to yr microbial processes. (The seedlings likely will not like the Hydropreox either, but if it's kill or cure, Fk it) and with enzymes they'll have better chance Not sure how well the Dich Earth would do, that's generally applied as a top dressing layer, it works by fucking up insects ability to keep itself hydrated which obv works as a layer on top where the insect is losing moisture to evaporation trying to get in, but less so in the medium itself where moisture is plentiful.
As to the seedlings, hell they're still standing, nothing THAT important can have been munched yet, as seedlings they'd keel over v quick if munched.
(and yep, no reason at all to add Vermi or perlite to coco, unless you're reusing old coco and its breaking down and you want the cork-like vermi to stop it compacting)
*has now read rest of thread*
In damp conditions, esp with trays and standing water, yeah springtails are more likely, with their 1mm jerky water flitting, and you'll see them with the eye at a squint. Totally harmless to yr plants, they're not interested, Springtails serve purely as a reminder not to leave standing water about and as others have noted, let things dry out.
So in summary, if it is indeed Fungus Gnats beyond doubt i'd go with the hydro perox wash, if it's Springtails, which sounds more likely, do nothing but let things dry out and be a bit more diligent with standing water, wot springtails heart)
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