Can’t quite remember how cause I’ve played all those levels so many times … but I can tell you that this level is definitely winnable. Perhaps try a few more times before uninstalling.
BTW which version of Eufloria are you playing? In 2.0.7 you can switch between two game modes, the original, slower-paced and IMHO easier mode and a new, faster and somewhat harder mode. I've just recently won level 25 in the new mode, and I swear: If I can win it, anybody can win it!
Good luck! Stick with it! Black Matter Mode is so much more fun
Now, if I just could win level 18 in the new mode …