Not gonna lie... I started with fishlore a few days and started a good conversation but it seems to be having alot of issues, so here I am. Anyway. .. I've been keeping fish off and on for about 5 years now. I've been able to retain alot of knowledge. What I currently have is a 20 gal with a hang on the back aqueon. I use filter sponge and bio media instead of purchasing new filters. I've recently added an in tank sponge filter. Priming it for future use. When I acquired the tank from an friend of a friend I thought that I was getting a 20 gal with all the equip. Well it came half full of water and 10 fish. Due to working and new child the tank was getting neglected. You could not see thru the aquarium due to so much algae. After 2 car rides equaling 1.5 hours I got the tank home and got to work. Looks good now and I never lost a fish. The stocking it came with was 5 Pristella Tetras (all about an inch), 3 Columbian Tetras (all under 2 inches), and just 2 Black Skirt Tetras. I added a Common Pleco to help with the clean up (he is about 3 inches). I due intend to upgrade to a 55 gal after the start of the new year (can't beat $1 per gal sales). And once a family member moves out and we do a slight remodel I will set up my tank that is in storage in the garage. I have a 120 gal acrylic tank with a 15 gal acrylic sump in the garage. Well that's that. Any ideas and advise for my current 20 gal...? Oh and I intend to use 20 gal as a quarantine tank once future tank is established.