If you guys want to produce massive HHO try this for fun. In your container take some tin foil and line the walls with it. Attach your negative wire to the tin foil. add sodium hydroxide, water and electricity and bam. Your producing alot now. I did this by accident the other day while messing around with different designs. It was impressive to see how much it was producing. I wish i had a video camera. I had it in the standard plastic walmart container with the flip top lid. I had the lid fully open and enough hydrogen was being produced for the top of the water to catch on fire and stay lit. It was wicked to say the least.