"Zëbulon" wrote

And the recommendation by e-mail was:

FORMALIN since the pond contains many plants. Salt would be out.

1 oz. treats 500g and costs around $9.00 for a 16 oz. bottle so it's
economical.


Please note the caution against the use of Formalin in ponds in the
following link under "CONCERNS OF SAFETY FOR FISH"

http://edis.ifas.ufl.edu/VM061