Thankyou all so much for the lovely comments- i was a bit nervous about posting as i am new to this board & have never been a member of a forum so it's all a bit new to me.
Yes Chris the whipfin does change colour just like you said but the funniest thing is why he keeps flashing the anthia- doesn't do it with any of the other fish & there's no aggression. Batty & desperate is a good way to to describe him!
Hi Quigs the lighting is T5's- six 80w Gieseman tubes 4 being white & the other 2 actinics. The lighting is very white at the moment but the tubes are due to be replaced and I'm going to try some ATI tubes in an equal mix to see if the colours will pop a little more.
Jas i know the only reason you were nice is because you're terrified that i will bring my Mum in again (she's got a soft spot for Jas thinks he looks like Bruce Willis).

As for pics how many hours have you got! Anyone who knows me Never asks to see my pics unless they want to die a slow, boring death.
Hi Matt
More details on the setup:
Tank is about 6x2x2 - had it made a bit narrower to fit an alcove so really about 20" wide which makes aquascaping a bit tricky - difficult to get a sense of depth.
The sump is 150L food container behind the tank and has all the gubbins in there:
heater
calcium reactor
DIY auto-topoff
carbon in a phosban reactor
skimmer (Deltec TS1060S).
returns (10 year old eheims still going strong)
Top off is on a peri fed by a kalk bucket outside.
Lighting is a DIY T5 frame
Circulation is 2 ancient Tunzes that were converted to streams and do a great job. On a controller for pulsing/wavey stuff. When the overflow is low it really sounds like the tide is coming in.
Tank has been running for 10 years and prior to that we had a 4ft for about 18 months. It's been through many changes and cockups over the years and over the past 3 years or so it's gradually moved over to mostly LPS and SPS. We've finally got it to the state where we're just going to let it grow out.
Sharon