Hi all I'm hopeful some one can answer a question for me I bought a 100 gallon glass tank recently to upgrade from a 55 and it has 8 holes drilled in the bottom in a line down the center of the tank i originally thought they were for a sump but after scouring the Internet for a similar setup I'm at a loss the quantity and location just don't make sense to me so if some one could explain and maybe share a link I would greatly appreciate it
Thanks
Thanks