I'm going to drill the back of my tank and run the water down to a wet/dry filter. I was just going to put a screen over the hole but when I was researching this project, some sites recommended using an internal overflow over the hole. What benefit is there with and internal overflow, why not just leave it open and let the water drain directly out of the drilled holes through the back of the tank?
If my post isn't clear, I'm referring to something like this https://www.youtube.com/watch?v=87yJbAW32hQ
If my post isn't clear, I'm referring to something like this https://www.youtube.com/watch?v=87yJbAW32hQ