Thought I would bring this thread back to life after discovering some new lfs in N.I.
I have been a customer of Grosvenor Trops for years, Alf and his wife built that business up over forty years ago. Its now under new management for last few years, personally i try to avoid GT now as they have got very pricey. The new unit is spacious but they dont sell anymore stuff than in the old shop.
A few others to try are:
Nortern Aquatics
Exotic aquatics
East Belfast Tropicals