Posted 6/23/2006 12:53 (#21535 - in reply to #21531) Subject: RE: algae in water tanks ? HELP PLZ
If your talking about household bleach, 1 cup won't do any good. That is effectivly lower than chlorinated drinking whater. I would add at least a gallon, maybe two. Check for water pH requirments for the chem that you are spraying -- roundup is safe with chlorinated water.