I was in Home Depot and they had "Pond soil" for, obviously, planting in ponds. It's in the bag but by touching it, it was clear the soil was more like mud, full of water. Probably already used to submersed condition.
Reading about preparation of normal soil to be submersed, I was wondering whether someone used this product.
I know guys who have used muck from ponds in their tanks. It works quite well. You just need to sift out possible dragonfly nymphs and other nasty unwanted hitchhikers.
Sifting alone won't remove what should be a concern with regards to importing nasties into a closed system so I think this is advice to follow with caution.
The Fraternity of Dirt
If at first you don't succeed,,, keep kicking it RubberSideDownOnTheLanding, 2-75g planted, 5-55g planted, 5-20g planted, 110g w/30g sump, 8-10g, Refugium, doghouse/newbie 2012 update adding table top pleco pans & a 90g (Nutz)
I should go back and check it out again but I'm pretty sure it's not turface based. It was very mud-like to touch.
I was thinking about using muck from pond but dragonflies are my (real) worry. One larva of damselfly wiped out my friend's population of RCS and CRS in couple of months. And only when there was no food in the tank, it climbed out of the plants. 50 euros dinner for that little bugger