just wondered on how difficult it actually is to keep sps corals???? is it just a case of keeping your water parameter up to par??? or is there more to it than that? also if there a limit on how many you can keep together or can you have as many as you like providing room on the rockwork? i have just set up my third marine system its been up and running for 6-7 weeks now so i will be looking to start adding some sps corals when my water parameters are up to scratch? any support will be appreciated!!!!