Stop aquarium plants floating away
Planting in sand substrate can be challenging
but a bit of thought can really prevent or
even stop aquarium plants floating away. Sand
is very fine and is not the best for plants
to root into and will not usually hold new
plants in place, especially when the current
is strong. Another issue many people find
when planting in a sand aquarium is that fish
really love to burrow and dig into it, usually
disturbing the plants.
Which plants?
The best plants for planting in sand substrate
are ones which have large root systems, thick
stems, require few nutrients through their
roots and grow relatively quickly .Examples
of good plants for sandy aquariums are Echinodorus
(amazon sword) and Cryptocoryne species. Other
plants that have smaller root systems can
be easily dislodged by water movement or by
aquarium fish.
Top tips to planting in sand substrate
Adding a layer of gravel or planting substrate
below your main layer of 
sand 
can help to give you a place to insert your
plants and allow them a larger or 
denser substrate to root into, this will also
provide them with much needed nutrients through
their roots; beware though, burrowing fish
will disturb this layer.
