The last aguarium I had was over thirty years ago and I have forgotten what little I knew about them. Now that my little girl is now 32, I thought it was time to get back into fish so after many hints I got a 55 gal tank for Fathers Day. The setup included (2) Aqua Clear 70 Filters, a heater and a light. I will be spending a lot of time on your site, hopefully learning something.