you would have to replace or modify quite some code because Particle Candy has no own collision and as it is single surface the particles itselfs are unable to a real collision too.
so you would need to add an alpha 0 sphere at the particles position for collision detection or something else ( or math collision over distance calculations )
so you would need to add an alpha 0 sphere at the particles position for collision detection or something else ( or math collision over distance calculations )