"Turn your Dead PC into an Aquarium"

Step 5 Finishing the lid

Once the top is put together its time to drill a hole for the air line, mounting holes, and air/food hole.

I drilled a 3/4" in hole directly in the center of the lid for the air/food hole. Then with some more scrap plastic I cut a circle using a 2 1/2" in hole saw. I then re-cut the circle using a 1 1/8" in hole saw using the original pilot hole from the 2 1/2" in hole saw as a starting point. The end result gave me a perfect ring that I could mount over the 3/4" in hole in the lid. This allows the PVC pipe to lay on top of the lid without going into the tank and using the ring as a collar to keep the pipe from sliding from side to side. I made one more smaller ring using the same method with a 2" in hole saw and 1 1/8" in hole saw. Stack it on top of the first ring, line it up, and nail it to the lid over the 3/4" in hole.

For mounting holes drill a 1/4" in hole in the middle from top to bottom and 3/8" from the side. Repeat on the opposite side. Then drill another 1/4" hole for the Air Line drilled in the center from top to bottom 3 5/8" from the left side. Note this is a picture from the back of the lid.

Last thing to do is line the inside if the lid with some weatherstripping. I used some I had leftover when I replaced my tail lights on my car.

You can see the end result in the last picture.