Fermentation like energizer bunny

My Pale Ale is still bubbling away- slower but strong at 7 days and the krausen is still floating at the top. What is up with this? good utilization... low temp takes longer... its alive?

First time in a better bottle. Always used a opaque bucket so this is the first time I witnessed the action.

Yeast starter with a American Ale (Wyest 1065)
12 oz Victory, 8 oz Munich and 8 oz white wheat malt
2 lb of Briess DME
4 lbs LME at the end of boil
02 for 1 min. with a stone and 02 tank
Temp controlled at 64°
Fermentation started within 8hrs and filled blow out tube

This is the longest vigorous fermentation I have witnessed.

Sounds about right. I did a brew last Sunday and still have krausen all the way up my better bottle neck. I did a starter and had pretty vigorous fermentation for 3 days. Switched to airlock a few mins ago, but still very bubbly. 2-3 secs between bubbles.

It will start to settle out around day 10 for me usually. I'm at 68F though, temp controlled.

My last red ale farted thru the airlock for 13 days.

Brewed an IPA about 2 and a half weeks ago that bubbled up to day 8 or 9. Taste tests have been great so far. Wouldn't worry about it.