Well spotted John, it does look like the one Trod has.
She has decided to keep the stock two bars (t8) and has just put in some new marine bulbs and reflectors, she will not be keeping any light loving corals yet. She is then toying with the idea of replacing the two bars with juwel I bars and T5 marine tubes or even an overhead in about six months.
The I bar that fits your tank (if it is the five footer aqua ) is the 150 I bar or the arcadia equivalant - please measure your tank to confirm this before/if you buy though, as this isn't my strongest area
although Trod did check it when she came round
We found them on sites between about £80 to £107 ish with free postage but then you need the tubes as well, expect them to be between £22 and £26 each, then they need reflectors, which will set you back about £10 for a pair.
So you are looking in the region of £200 to just replace the bars, you will obviously need tubes anyway at some point
So round figures: £300 say it quick and it doesn't hurt so much.
Options:
Replace one bar and have 2 x T5 and 2 x T8 3 x marine white and 1 x blue actinic - could have corals like Euphyllia
Replace both bars = 4 x T5
Stay with what you have, just replace the tubes to 3 x marine white and 1 x blue and don't have higher light corals
Make a LED hood like Rabbut and Morri
Halides - could keep anything but high running costs
Overtank T5s
Seffie x