DIY Flying ball - Hydrogen with their own hands

Hello all friends, in this video we will make a flying ball, filling it with hydrogen. This experiment is easy to replicate at home. This experience will please your children and loved ones, giving you flying balls made with your own hands.
--- At me why that the ball quickly has gone down approximately in a floor of day, it is not possible to keep hydrogen in a ball, prompt as to solve this problem. I tried the tail to insulate with nail polish, it did not help me.
--- Be careful: the cleaning agent for pipes (Titanium, Mole) is ALONE ALKALINE.
For the experience, we need:
- aluminum foil,
- cleaning agent for pipes (Titanium, mole),
- water,
- plastic bottle,
- bucket with water,
- a ball,
- funnel,
- And so on.
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