Bill Nye Posted May 18, 2017 Share Posted May 18, 2017 I am going to be downgrading my reef into a 20 gallon long since its becoming too much to maintain with a newborn in the house! What is the best overflow for a 20 gallon long? My current reef has a herbie set up and I love how quiet it is so I can't go back to a single drain glass-hole kit. Not sure what size I should drain I should run (1"?) on this tank but I will be using a mag 5 throttled back as my return. Quote Link to comment
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