I have a similar situation with a 1/4 ac pond that has been reduced to about 1/4 of it's full elevation size due to the extreme heat and drought. I purchased rotenone last spring with the intention of removing all the green sunfish and restocking with coppernose BG. However, I'm now wondering if a few gallons of household clorine bleach would do the job. Clorine should dissipate within a few days after application, but I'm not sure of it's effectiveness.
