No, we sure don't. The best way to keep it from floating is to weight it down with gravel for the first 24 hours, then gradually expose the LEDs and keep the edges buried under the gravel. Once the unit has had all of the air pushed out of it, and has absorbed water, it will stay put. It takes several hours, minimum for air stones to build up enough pressure to stay down.
Another cool thing to do is to place it beneath a piece of wood, a rock that has holes in it, or a piece of decor so the lights shine through it.
Date published: 2018-07-03