I've got brush algea, and I will of course do almost anything to get rid of it. If my memory serves, I have 2 options: Mechanical removal SAE or have I forgotten something? Thomas D. Kryger email: TDKryger at bigfoot_com http://hjem.get2net.dk/TDKryger/ (Danish) --------- AP-Data http://members.easyspace.com/AP_Data/ (Aquatic Database) email: ap-data at bigfoot_com