Good morning! So I'm going to set up another 55g tank today I made the stand and have the decor and plants and cycled the filter media in another tank, but I can't decide which tank I want to use. One tank is h-17.5 l-48.5 w-16 (outside dimensions) and fits perfectly on the stand. (I didn't think to check the dimensions of my second 55, I assumed they were the same) And the second one is h-20.5 l-48.5 w-13 which gives more viewing room but the fish probably won't like it as much. So which one would you use? Both are in good condition and hold the same amount of water. The tank will be housing cichlids and one aggressive gourami. Longest fish will be about 6".