Hi, am new to using sump, I bought a cadlights versa 90g, it came with corner overflow , the tank has 2 holes one for the drain and one for return, I guess this drain style called durso, although am going to use it for planted tank, I thought I will ask here as you guys have the most experience, should in turn the return to emergency line? Or I Can use optical sensor (Ghl) to shut the pump off when the level get high. Am trying to avoide flooding.
Thanks
Thanks