I need to dose my pond with PP. I just received some that I ordered online and read the directions. Quite frankly, this chemical scares me, and I've never used it before. So I was wondering if anyone out there has used this to treat their pond and can offer any advice and/or suggestions. The directions did state to ensure that your pond is free of most organics, so I did a clean out and water change yesterday. However, now I have to wait at least 3 days to dose because I used dechlorinator and hydrogen peroxide when I cleaned the pond. Also, I know it shouldn't be run through the filter system, so I plan on shutting down the pond when I dose. If I put in an airstone during this time, will that be enough air for the fish? My pond is approximately 400 gallons with 10 goldfish. Thanks in advance for any help!