I am building a 20 gallon sump and would like to know if anyone can suggest a glass shop in the Gwinnett area where I can purchase the glass and have them cut glass to size for the baffles
Ace Glass on Buford Hwy about a mile outside 285. They'll cut it to size and finish the edges, and you can get whatever thickness you want. Baffles for a 20L should run maybe $8 a piece.