Paul Disdle wrote:

What do i but on the bottom of my tank? my head is swimming what with
flourite, dupoint, gravel, sand etc etc.

A was thinking aquatic compost with fine gravel ontop. Is this a good idea.

If you can figure a way to move or replant a plant without releasing compost
into your water, it might work.

What's wrong with simple substrates, like Flourite (my favorite) or 2mm gravel
(cheaper)?