Could someone please shed some light ( no pun intended) on why the tank below was vibrant with lovely coloured green background before I filled it up? The background was a beautiful lush green. If you look at the sides/edges of the background you can just see how lovely and green the colour is.....I had intended to take this off and put a dark/black background like in the aquatic shops as the tanks there always look so crystal clear and blue, but what's the point when it would be even gloomier than it is at the moment. The lighting tubes are Boyu and even with both on the background and the whole tank really still looks insipid. My much smaller tank had a vibrant blue background and this always looked lovely and bright. So what's happening here I don't have a clue............
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