I dont have a model 3 sump for sale? Model 2 is not drilled, bio balls removed, sponge removed, otherwise good condition. Model 1 sump was drilled with a 1 inch bulkhead for an Aqua-c EV 180 skimmer. That can be plugged, so no big deal there. I bought it with a separated seam at the top in the drain compartment (nice! didnt notice that untill after I drilled it!) but, I filled the seam with silicone and it never leaked. The water level is below this seam. Someone handy could make a more proper repair with acrilyc glue. Thats why I am selling the model 1 so cheap.