Uhm!.... Have this hairy algea growing on the pebbles in one tank... I've taken it out washed & scrubbed it, but cannot get rid of the "spores"..... it keeps coming back after a week..... I have now resorted to boiling the pebbles... (Often heard of people doing it, but never thought I'd do it meself)!.... It is currently 15 minutes to midnight here in SA, so hopefully the neighbours won't see me doing it.











