From The Aquarium Wiki
APD - Aquatic Plants Digest, part of the FINS : The Fish Information Service web site.
A much respected and popular mailing list called 'Aquatic Plants Mailing List or Digest'.
The aquatic plant mailing list is intended to be a medium for exchange of information about all aspects of growing aquatic plants as a hobby. Postings on both aquarium plants and pond plants are welcome.
The web site provides a huge wealth of archive information on the subjects below.
Topics of discussion include (but are not limited to):
- Individual plant species (identification, cultivation, propagation, etc.)
- Substrates - pros and cons of commercial substrate additives, potting soil, peat, etc.
- Water conditioners and fertilizers.
- Hardware - heaters, filters, surface skimmers, etc.
- Compatibility of fish and other organisms with aquatic plants.
- Trades/exchanges between hobbyists.