I have a lot of aquariums! If you see any of my fish tanks/racks and are interested in the build, here are the DIY PLANS!
Here is my list of aquarium Common Issues.
For my glass tanks, I built my stands with cinderblock and wood. These are super strong and easy to put together. The glass tanks all run on sponge filters which is connected to 1 air pump per stand. In Stand-1 (left) The top is two 40G breeders on the top rack, with four 10 gallons in the middle rack, and one 75G on the bottom rack. In stand-2 (right), the top is a 20G, 29G, middle rack is two 20GH, bottom rack is a 45G.
Stand-1 
Stand-2
In my living room, I have a main tank. It is an indoor pond made from a 300 gallon Rubbermaid stock tank. The drain fitting has been refitted with a Schedule 80 bulkhead with a plug. I also put together a DIY filter with a 45 gallon Brute trashcan.
300G Stock Tank 
Goldfish! Sir Schwimothy McFinn @ the top
I also have an outdoor pond! It is a 100 gallon stock tank. It is super good for growing plants outside. I have about 100+ guppies in there. I love to take my turtles to this tank for a delicious duckweed feeding and basking. I do take my turtles inside afterwards.
