Can I steal this thread for a minute???
Leo/Mr._X, I am building a DIY HOB
Overflow. Once I finish that I am going to do a sump/refugium. My tank is a 45 but I want to go big so I don't need to change it out when I upgrade the tank. My space is a bit limited though so I would like to know what the minimum tank size would be to build the sump/refugium sized for the 45 I have. If I can go bigger I will but.......