My dragon pumps out about 3 bubbles a second, but I thought I could get more through some creative engineering. In this instructable, I will show how I doubled my bubble output with the use of a single pen, some glue, and my soldering iron.
Step 1: Materials
1 Pen (Bic or similar style)
Aquarium pump with 2 nozzles
a short length of the hose from your pump hose
Step 2: Checking the Hose Fit
You want to make sure that the hose fits snugly in the pen tube body before going on. If it doesn't you might have to glue the hose in or attach it another way. My hose fit snugly, which is important to keep pressure from escaping.
Step 3: Drilling for Oil (not Really)
Always solder in a safe environment, with a window open in this case because you will be creating fumes.
Step 4: SEAL THE HATCHES, DIVE DIVE DIVE
Step 5: Connect the Tubes
Insert your hose cuttings into the ends of the pen.
If they fit snug, you're basically done.
Step 6: Connections....
Attach the two hoses to your aquarium pump, and connect the hose leading to your decoration to the pen cap.
Step 7: Results!
I noticed a massive increase in bubble production!
More motion in my ocean.
Check out the before and after shots.