For anyone who's interested, I have a rather lengthy article on algae, classifications there of, and what to do about it. Just e-mail me, and I'll send it to you. It's much too long to post to the list, but it's got some good info. Ciao! Shelley ********************************************** Shelley Peacock <speacock at starcon_com> You know you're having a bad day when you jump out of bed and miss the floor. **********************************************