On Wed, 7 Jun 1995 03:39:02 -0400 you wrote:
> I have used fine sand (as opposed to gravel) as a substrate for years.
> 2. Right now the substrate in my tank is almost a solid mass of
> roots. Impossible to pull anything out without disrupting the entire
> tank. Large Echinodorus have roots from one end of the tank to the
> other. Growth slows down after a while except in the very well rooted
> plants, which continue to flourish. I have a some gorgeous sword
> plants (E. osiris. E. bleheri, E. martii, E. uruguayensis) which
> still produce new leaves every few days. It seems that new plants
> don't adapt well. Inflexibility
I wonder about compromise here. I have tried "aquarium" #2, 3, 4 of
gravel (these are the commercial size markings on the bags, #2 is
This sounds more like the sand that is used in concrete, I have used
that too but it packed on me a lot. Maybe we could get a bunch of
different sizes and try them? Or????
Dave Gomberg, Experimenta San Francisco CA gomberg at wcf_com