These lists are very broad in scope and have to do with a wide range of aquarium related subjects. This list is run by Thiel Aqua-Tech and is concerned with issues of filtration, fish, plants and anything else having to do with freshwater aquaria in general.
Topics are in wide-scope, but tend to lean toward marine biology.
For discussion of pond and lake management problems, including but not limited to, weed and algae control, fishery management, pond and lake restoration, shoreline stabilization, watershed issues, and dredging and sediment removal. The Freshwater Tips mailing list is not a list you can post messages to. However, the group is mainly marine fishkeeping, invertebrates and tropical freshwater. AOL 6.0 considered harmful. Because it can ONLY send HTML and not just plaintext any mail from AOL 6.0 is filtered out.