Well,

Since you have gravel, I would almost say that you wouldn't really need to
put anything down.

I have quite a few plants in my 29 gallon tank and don't have any type of
fertilization except carbon dioxide bubbles.

If you have enough fish in the tank, they should create enough of the
nutrients needed plus some of the fish food.

Just my two cents.

Brian S.

"ATD" wrote in message
om...
I have a cycled 20G tank (high) that currently has some Java Fern and
hornwort thriving. Substrate is plain gravel 1 inch deep.

Since I'd like to add rooted plants what would be the best way to
proceed? Do I add flourite to the existing gravel bed to build it up
or can I plant the new plants in the gravel and put laterite balls
near the base of the new plants? I've read of others who keep their
plants in small clay pots in the tanks.

Thanks.

Andy