Overflow box for 20 long.

[shollis2814]

My current sump and overflow are too big for my tank and cabinet. I can make a sump from a 10-gallon tank. What's a good pre-filter/overflow box that won't take too much real estate from the tank?

 

[Flippers4pups]

Ghost style overflow like this one, but not this size:

https://www.bulkreefsupply.com/eclipse-l-overflow-box-1000-gph-eshopps.html