By the way I found a pond volume calculater online and in a puddle like I had it supposedly had 5500 gallons of water if the internet was right (25ft circle 1.5ft average depth). And I put 8 gallons of bleach in for the 99.9% kill. When the pond is full its estimating a number approaching 1 million gallons. That would mean I'd have to dump in around 1450 gallons of bleach to get the same mix.
So I don't think I am doing any harm with 8 or even 50 gallons of bleach.
