Gday mate.
Thought i might chip in.....
At a guess for next grow.
More drainage, and aeration. If your root zone is nicely aerated it'll deter the gnats from using your medium to breed in the first place.
Gnats are actually attracted by rotting material in the soil. Because its food for the maggots.
Something to bare in mind.
They like anaerobic environments to lay their eggs.
Ive had them once indoors, during warm weather. I use rocket pots. Sand on the top etc was useless. They were using the holes on the sides to travel in and out etc. The wrigglers were near the bottoms of my pots.
Only solution in the end, was to dry them right out.
It really wouldnt surprise me if a small amount of your soil is staying continuously damp. Such as the centre of your root ball.
Being "supersoil" probably means its from a recipe, and is very rich in organic matter. So without adequate drainage and aeration would support a favorable environment for gnats to thrive.
Just my 2cents.
They're annoying little bastards.
Good luck OP.
Thought i might chip in.....
At a guess for next grow.
More drainage, and aeration. If your root zone is nicely aerated it'll deter the gnats from using your medium to breed in the first place.
Gnats are actually attracted by rotting material in the soil. Because its food for the maggots.
Something to bare in mind.
They like anaerobic environments to lay their eggs.
Ive had them once indoors, during warm weather. I use rocket pots. Sand on the top etc was useless. They were using the holes on the sides to travel in and out etc. The wrigglers were near the bottoms of my pots.
Only solution in the end, was to dry them right out.
It really wouldnt surprise me if a small amount of your soil is staying continuously damp. Such as the centre of your root ball.
Being "supersoil" probably means its from a recipe, and is very rich in organic matter. So without adequate drainage and aeration would support a favorable environment for gnats to thrive.
Just my 2cents.
They're annoying little bastards.
Good luck OP.