Medium Tanks (31-100gal)

Hi all been keeping fish now for many years my first love like many were freshwater tropical, cichlids were the fish i enjoyed most, and with discus i had many good times breeding them,But after a chance ebay purchase/win of a marine tank (much to Jane (wife) my rock) the salty side got a firm grip of me in may 2010 and i was well and truly hooked,it was a massive learning curve at the beginning and the way i did it i would not recommend to anyone really,talk about throwing myself in at the...