First of all let me say, I have no pond experience and have very little interest in learning how to install them. I do commercial maintenance exclusively and have never really had the need to learn about them until now. I've got a very large account that has just built 2 new locations and one of the locations has an 8x8 pond with a waterfall. They want fish and aquatic plants in the pond and want to include the pond maintenance in their contract. They have 16 locations and each location averages $600 per month and I don't want to create a window for another company to get a shot at the other locations so I need to make sure that I'm on top of this pond. My questions to the experts are........ Do you have a set maintenance program that you offer to customers? If so, what does it include and how many times per month or year do you schedule routine maintenance? This is a commercail customer and they will not do anything in regards to maintenance. It will be strictly up to one of my crews to maintain the pond. We visit 36 times a year which includes weekly visits during the growing season then every 2 weeks during winter. Price is not really an issue but I need advice on a good program to follow. We are in Memphis and it does get below freezing but not for extended periods of time. Any help would be appreciated.