Impaction

[mpmistr]

Cool! I'll look into the carbisea moonlight sand.
Maybe I can do a bottom thicker layer of the play sand and do the carbisea over it. Mainly because I really like the look of it! Then I will have the heavier sand to plant my plants?

If you layer sand it will eventually completely mix in with the other. That being said, it still would help keep plants down. I am able to keep water sprite and vals rooted in it, the frogs do not kick it up that often and once the root structure gets a firm hold, the frogs cannot kick it up.