Level 164, go crazy for 3 Stars!

Starting Bubbles: 60
Recommended Potions: +3 holes in the ceiling and Rainbow bubble
Points needed for 1, 2, 3 Star: 130 000, 200 000, 160 000
Special bubbles: Mystery bubles,  Ghost Lock on Chain 2 Lock Bubbles(1 chains)

You should urge to open up the locked bubbles, that gives you much more shooting option.

One thing to keep in mind. If you shoot away the lowest Mystery bubbles you’ll have difficulties to reach the locks!

And you can leave some of the lower Mystery columns untouched to drop on green spiders that you have gathered from those Mystery bubbles that you have popped. There is nothing to be afraid of above the locks, just more fun Mystery bubbles.
make sure that you can drop any Mystery Bubble that you are about to hit fast, there is always that possibility that it is a Bomb. Fortunately thinking ahead according to this is quite easy. :D

Here is a 3 star guide for you to watch, as you see, taking risks cn pay off as 3 stars once in a while!