Check out the new T-shirts and Hoodies at http://MonsterFishKeepers.store
It depends. If the tank is drilled sump for sure. But if it’s not canister. I don’t know about you but I’m not taking a drill bit to my $1000 glass tank. For reference I’m running three canisters on my 220.
Drilling isnt that bad. Just take your time and follow the template if using an overflow if not make smart choices on hole placement. My 180 is reefready I wish I'd have drilled it myself I could have gotten much better flow myself.the only reason not to go with a sump!