Hi, I'm looking for some help here. This is my first sump experience and I'm having an issue with my PVC overflow. I used 1 1/4" PVC to make it. I got everything hooked up and then find out that my overflow siphons EXTREMELY slow. I'm having to keep the return water pump at a very low setting so I don't flood. I followed a design online to make it and I have no idea whats wrong with it. Here are some images, please if anyone has any idea what I've done wrong I'd really appreciate some help here. I'm using a Rio + 3100 water pump. My check air valve has airline tubing just hanging (I really couldn't find much information about this part of the overflow build so idk if its right, I can suck air out of the overflow through it).
