Hi Burt - I wish that I could help you mate. BUT, unfortunately, I lost ALL my corals when we moved house in November last year. I only have a FEW TINY corals at this stage. I too am struggling to get my coral collection up.
Why don't you join in on the Cape Town Reef Junkies meeting this coming Saturday? Have a look under the Clubs forum on MASA. The people will most likely be bringing frags to the meeting.