Aquaclear hang on back filter. Tropic Sun lights. Pick your decor and gravel, fill it up and let it run for a few days then have the water tested. See what your water type is. If you have hard water then some nice African Cichlids would work out best. If you have softer water then a nice schooling Tetra. Key is letting your water cycle for a few days to a week before checking it. Water will naturally equalize to either hard or soft. It takes at least 24 hours for a correct pH reading also. Either way you go make sure you get your fish from an actual pet shop or online, dont use a chain store right off the bat. If you have any questions feel free to contact me, all my info is on my site. I have been keeping and breeding fish for over 15 years. This is what I do for a job is set up and help people maintain fish tanks.