Could you elaborate on your system?
Are you filling the saucer and letting it wick into the medium?
Normally, when I think of hydroculture, I think of rooting a cutting in a glass of water in a window.

What are you trying to grow?

I grow a bunch of house plants this way. it'll be better with more air getting to the roots though. switch to orchid pots with slits up the sides or net pots.

Don't use soil or you're asking for problems later on. I use hydroton or sphagnum moss to hold the roots.