How do I keep plants in place

[Mhilluf]

I was told at my local store that I could just place the plants and pile some of the stones around them and that I didn't need dirt or substrate . . . but I'm finding that hard to believe.

I followed their instructions but am worries that the plants will have nothing to grip but loose stones and float around.

 

[V p1839]

Try tying your plants to a rock with some thread or superglue.

 

[micaiah12]

Rubber bands are like underwater duct tape not to mention fish safe!

 

[Mhilluf]

Well at the 24 hour mark only two plants uprooted. I weighted one down with a large stone and rubber banded the other. All plants still green!

 

[mohican]

Depends on what plants. Some plants needs some sort of substrate to have their roots naturallly attach too.