Octopus Blast

In this puzzle game, you must burst elements to trigger a chain reaction in order to eliminate them. You need to eliminate all elements to complete the level and pass to the next level. You have 400 levels to complete before finishing the game.
In each level, you can collect stars. Complete the level as fast as possible in order to collect the maximum of stars.
Will you be able to complete all levels with 3 stars? This is your challenge.