Rappin' With ReefBum is a LIVE talk show with host Keith Berkelhamer and guests from the reef keeping community. In this episode I chat with Mark van der Wal. Mark has been a reef tank hobbyist for 28 years and was the co-host of the very popular Reef Therapy podcast with Jake Adams.He was an active member on Reef Central in its early years, earning a tank of the month way back in 2001. Mark did moderate briefly on RC back in the hey day and he has written occasional articles for Reef Builders as well as Reef Central. A reformed metal halide user and recovering SPS addict, Mark currently enjoys a couple of mixed reef tanks.