Re: Aquatic Plants Digest V2 #35

Paul Rothel <prothel at bright_net> said, Apr. 26:
................I use my Hygro as sort of the canary in my tank. If that
>particular plant isn't growing substantially each day, something is wrong.

It was a pleasant surprise to see this statement.  I use Hygrophila
polysperma the same way.  It is a great indicator plant because it grows
rapidly when conditions are good and its variations in leaf size, shape and
angle with the stem can tell a lot about how good the light, nutrients, and
CO2 levels are. However, it can take over the tank quickly if not regularly
and severely pruned.  It is also a very good plant to get started in a
newly set up tank.

Paul Krombholz                  Tougaloo College, Tougaloo, MS  39174
Where we are having mild sunny days and cool nights.