When I looked at the activated sculk sensor tendrils, I thought they didn't look different enough. So I made a solution! Now they go straight up and vibrate really quickly. It now really feels like the sound is activating the sculk.

NOTE: POTENTIAL EPILEPTIC WARNING. Although it's only 2 frames of different that aren't that different from one another and take up a relatively small portion of your screen, they do flash at 20 frames per second.