Hortic, yes, you can re-use that soil. you can mix with new soil or ammend it or use it as is. however, as you said, remember that if you use it as is, it will lack nutrients.
best way to give nutrients and mass to soil to be re-used is with earth worm castings and vermiculite.
btw, I forgot to mention, that using only ewc and vermiculite makes for a light soil, light in the sense of weight, so it's best to mix it with good local soil or good clean river bed sand to give it a bit weight to hold the plant down better.
peace
best way to give nutrients and mass to soil to be re-used is with earth worm castings and vermiculite.
btw, I forgot to mention, that using only ewc and vermiculite makes for a light soil, light in the sense of weight, so it's best to mix it with good local soil or good clean river bed sand to give it a bit weight to hold the plant down better.
peace