we tried someting new

"Derek Broughton" wrote in message
...
snip
The old-timers here will remember that, at the time I started into
ponding,
sometime in the mid-90s, one of the hottest debates was over the use of
pond-safe EPDM and EPDM roofing liner. Firestone, the major manufacturer
of both, insisted that the roofing liner was not fish-safe, but many
people
used it without trouble. I know of one DIY study that claimed it killed
test fish, but I also know of dozens of respected ponders who never had a
problem.
snip

The key variable here is that in some areas, roofing liner can be treated
for fungus, mildew, etc. and those chemicals could be harmful to fish. My
EPDM was purchased from a pond store, and it says Firestone on it. So I
guess my area does not have these "mythical" chemicals.

BV.