On Tuesday, BioNova® conducted the final One Day Seminar (ODS) of the winter educational tour. The seminar was held in Newark, NJ and had one of the largest turn outs for an ODS in recent history. The audience was comprised of landscape architects and designers, pool and pond designers, contractors, and other interested parties from both the United States and Canada. In addition to Alan Weene giving his presentation on how natural swimming pools work and other topics that included limnology, water quality, algae control, and aquatic plants, both James Robyn and Allen Schnaak also gave presentations to discuss the evolution and growth of natural pools in North America.