SWIM got his hands on Peat moss, Perlite and store-bought soil ("organic compost" - "for better drainage and porosity").

So now he wonders what ratios he should mix these three together? Any suggestions there?

He wants to transplant his planties over into a new clean soil as the one he got them in now is from his garden, kinda compact and got lotsa bugs and crap in it.

Cheers.