I live about an hour north of Atlanta, GA and have a approximate 600 gallon pond with a waterfall and stream flowing down the hill into it. I had the pond professionally cleaned completely, draining and everything last year. I have the guy scheduled to come out to clean it this week, but had second thoughts it. Should I have him clean top to bottom or maybe just vacuum really well and clean all pumps and filters. If you can till by my picture, my pond has small rocks covering all of the bottom of it. Also, we will be having rain all next week, would it be better to wait until after that, which would be going into April.