>I have a 3' high tech planted tank that came down with a cyanobacterial
>(blue green algae) bloom. After trying a number of things to get rid of
>it I eventually convinced a vet to prescribe me some erythromycin to kill
>it off. I treated the tank at the recommended dose rate (5-10mg/L) and
>two days later all the cyanobacteria were dead.
Tell me, how did this blue green aldae appear? Was it a floating algae?
Andrew