Well here are a few pics of the tank in progress. It is 36" L x 30" W x 20" H so it is about 95 gallons. The overflow has been drilled to accept a 1.5 inch PVC standpipe with a strainer on the top of the standpipe. Black plastic covers the overflow to hide the standpipe and to match the back of the tank (painted black). There are two 1" holes in the back panel for the bulkheads and loc line returns. The loc line will have nylon attached to the outlet. The overflow is screened by two pieces of eggcrate material sandwiching a square of filter material. The "nuts" that secure the uppermost eggcrate is above water to discourage exploration. After all, it is possible for a very determined cephalopod to unscrew the four bolts, remove the top eggcrate, remove the filter material, slip though the bottom eggcrate, slip through the standpipe strainer, then into the sump. However, the eggcrate is a very tight squeeze to get out. The lid is glass with insulation urethane as a seal. It is held in place with strips of industrial velcro. It will also be held down by brackets from the light lid. If need be a lcoking mechanism can be installed in the future. Let me know if there is anything I missed. Thanks for the imput.