If you ad 1 to 2 mg Co (originating from CoCl2) the
growth of fry will be increased up to 33% in the first
weeks. More than 4mg may cause deaths. Has anybody
more cobalt in his water and has better fish growing
results? The author (from Poland) told me that this
kind of cobaltine solutions are sold in Poland as a growth
help partially. As far as I remember the solution is pink.
Has anybody seen these water ads in shops?
Harro
harro.hieronimus at t-online.de