Wow thanks for the quick and helpful advise.
The only reason im' not having dual corner overflows is that my stand does not exactly allow me to run piping across (the wood partitioning are load bearing , and i'm not sure if i want to bore holes through them
However i'm curious about how removing the teeth actually increases surface skimming (would make sense for the same linear length) -- >so what do you guys use to prevent snails and other things from going over the surface that you don't want to : ie can anyone link me to gutterguard'd or eggcrate'd teethless overflows
?
Unfortunately, I'm probably restricted to one overflow , so for 150 gallon aquariums it's advisable for a 1.25" bulkhead/drain pipe and go for a 1 inch return/bulkhead ... or go for the slightly smaller combo of 1" bulkhead/drain and 3/4" return/bulkhead