is one piece episode 149 filler?

Mont Blanc Cricket explains to the Straw Hat Pirates that the sudden night they witnessed earlier was the result of a dense cloud and that the location of Skypiea was directly above this cloud. Cricket then explains that in theory, a ship can ride on the Knock Up Stream to reach Skypiea.

However, if they fail to find a place to land there, they will fall back to earth. According to Cricket's prediction, the next Knock-up Stream will occur the next day.

The Straw Hat Pirates go back inside to eat. Meanwhile, the Bellamy Pirates approach Cricket's home for gold.