I have a 10, 29, 65, 90g cycling that is saltwater. 10g is being upgraded to the 90. I also have 7 freshwater tanks,1 10, 2 x 20, 55 and a 75g. I also have a 20g qt for saltwater and a 10g qt for freshwater that is empty. I also have a 5g betta tank on my desk.