Hi guys, just joined the forum and would like some answers already... Everything is looking good so far and have found loads of new info already! I have a Juwel Rio 125 that I'm setting up at the moment. It has standard lighting unit with 2 18 w T8 fluorescents in and I am looking into different options for the lighting in the future. For the moment, if I was to get a Juwel T5 unit, how much would the light increase? I have read that the output is 150% compared to normal T8 bulbs so with reflectors, the output should be many fold more efficient compared to T8? So 2 T5 should be 2-3 times more efficient compared to T8? The wattage only increases from 36 to 48 so figuratively the difference isn't huge. Any comments welcome!