B bcavalli Well-Known Member Market Messages 3,610 Reaction score 36 Location Johns Creek Oct 22, 2016 #1 Guest speaker Mark Callahan (Mr Saltwater) gave a presentation in front of an audience of about 50 guests. His presentation covered tank automation with a lengthy Q&A following. About $600 in prizes and gcs To Atlanta Aquarium were raffled off.
Guest speaker Mark Callahan (Mr Saltwater) gave a presentation in front of an audience of about 50 guests. His presentation covered tank automation with a lengthy Q&A following. About $600 in prizes and gcs To Atlanta Aquarium were raffled off.