swint144 wrote:

According to "Ecology of the Planted Aquarium," the this is a protein
film on the water, the same thing that's responsible for the foam in
rapidly flowing creeks. This and suspended carbon-compounds are very
good for getting metals out of the water column. Excellent book filled
with experimental data, not pretty pictures.


Funny, I just read a review of this book at Amazn.co.uk:

"This is not a coffee-table book full of pretty pictures of a few
plants. Nor is it an encyclopaedia of plants with just a few notes on
keeping plants. This is about the ecology of the planted aquarium, or
how to keep plants in an aquarium. This is the best book on low-light
non-CO2 books ever written. Just swap soil for Flourite if you want to
avoid mess, and away you go...
If a book by a Tom Barr is ever written, buy that as well "

Nikki