Regards,
Adrian Arnold.
<SNIP>
>Adrian,
>
>  The "algea" is probably the beginning stage for a type of moss
>that seems to come up in everyone's pots.  It can't be avoided
>easily.  It will compete for the light and the seed may not be able
>to germinate if covered deeply.  However,  a little moss growing
>with seedlings seems to improve their vigor, probably by increasing
>the humidity around the stem and the adventitious roots...
>
>Dave Evans
>