Aquarium Desk Lamp Adapter

I needed a light in my fish tank to grow some algae to supplement the diet of the fish. But, I was too cheap to buy an aquarium light. So, I decided to use a spare desk lamp I had. Had to print this little adapter so it would stay put. Obviously, use at your own risk, electricity and water don't mix well. GFCI outlet recommended.

prints okay with no supports.

update 1-15-19:
If the light was too far forward, the old adapter could rotate forward. I have updated with a much tighter fitting