Just as a future reference to anyone building this.....1.75 INCH PVC DOES NOT EXIST. You have to either downsize to 1.5 INCH or go up to 2 INCH. After building my own I can vouch for it and say it works AMAZINGLY well but I believe that the Piping Rex uses in the picture is 1.5 INCH not 1.75inch. .....Also when it came to drying time I was extremely impatient and completely fed up with my red sea in tank reactor. I only let the thing dry for about an hour before I couldn't resist the urge to hook it on and see it work. Everything was fine no leaks at all. The cement and sealer are designed to dry within a few minutes so if your in a rush you don't have to wait days for it to dry Imo.
"One generation plants the tree, the next generation gets the shade"