Everything is running fine now. The carbon pulled most of the meds out and the skimmer went back to normal. The sedra 5000 is working great. I am going to try to make the gate valve. I tried it once with the asmskimmer.com package but it didn't fit in my sump. I am going to try to modify it to fit in my sump and use a ball valve. If it works I am switching to the gate valve. I also might try the mesh mod since I have left over enkamat.