I mean, its sunshines #4 advanced peat moss mix. It says soilless, but im not sure how that works. it looks and smells like soil, im not sure what the difference really is but it seems to be labeled soilless
It can get technical, but yes, it is a 'soiless' mix because there is no soil/dirt in it. Just about ALL bagged mixes are soiless mixes. Like FFOF, Roots, Sunshine, whatever. *Top soil* is usually soil, but if it's peat based, it's actually soiless ... technically.
I've always made my own peat based mix, but call it *soil* and treat it as such and not as a hydro medium. I add lime to get the pH in the 6.5 - 6.8 range, use dry organic amendments and treat it much like my raised bed soil garden. Before starting organics I used the same mix, lime and all with Jack's Classic for 35 or so years. Never messed with hydro.
It smells like soil, acts like soil, gets treated like soil, but is technically soiless and gets labeled as such (the Sunshine mix). Just don't get hung up on the technical stuff.
Wet