have you had any experience with it?
reason I ask from all I have read it wont affect the beneficial bacteria as much as much as it would the algae. The only problem is all the extra protein caused by the dying bacteria makes it so the filter cant keep up which case I just have to keep an eye on the ammonia levels.
either case I plan on removing most the cyano bacteria before dosing so what it does kill off hopefully wont cause too much extra waste in he tank and i also plan to remove my piranhas from the tank and making sure it is still cycled before I add fish back to the tank.
thanks for the concern and let me know if you have had any adverse effects with it.