Hello All, I am thinking about expanding my hobby with an Amazon Basics rack for 20 gallon long's (thinking about 3-4 tanks). I am currently cycling 2 sponge filters in my 40 breeder planted tank: two Nano coarse Sponge filters (3.5h x 3w) and one Hydra Aquatics Standard medium Sponge filter. These will eventually go in the 20 long's once it's set up, but I am not sure if hooking those 2 USB Nano Air Pump's for the use of 3-4 tanks would be enough flow. There are 2 Ziss Air Stone's and a Penn-Plaxx Air stone, and the Ziss ones are very good at dispersing the air. I know Cory from Aquarium Co-Op is a strong believer in a smaller amount of flow, but does anyone think it could be pulled off?