How does Hextech Anomaly work? When you recycle the runes, do you have floated runes and how long do they stay?

Ruling: When you use Hextech Anomaly, you float/add power to the rune pool in exchange for more energy. These floated runes stay in your rune pool until the end of the round or draw phase.

Sequence:

• Use Hextech Anomaly to recycle runes
• Power is added to your rune pool
• Rune pool empties at end of round or draw phase