Hello! I'm new to the hobby and have found lots of answers reading threads from this site. I decided to join it obviously and hope it will help me increase my knowledge on this fun little hobby I've stubbled upon. I have a 5.5 gallon micro tank with 3 guppies, 2 cherry shrimp, and 1 snail. I do weekly water changes on this one and it does well now. I tried other fish such as zebra danios and neon tetras in this tank but some reason they did not do well. I have a 55 gallon tank which I got for free and it came with a 6'inch placo and a 31/2-4'inch three clawed frog. I have stocked this tank with just minnows for now since the frog will eat them. I do bi-weekly water changes on this one. I'm getting another 55 gallon soon ... this is the extent of my hobbying so far.