Quote Originally Posted by sarah louise
I was thinking about limiting the growth and spread of cyanobacteria in the waterways more than saving money.
Unless you're dumping truckloads of barrels of the stuff into your streams or lakes, I wouldn't give that a second thought. Plus, cyano is one of (if not THE) oldest known oxygen producing organisms on earth.

Having fought it (red slime cyano) in my coral and saltwater tanks, I'm not in the least worried. But we wern't talking about flushing the stuff either. (at least I wasn't)