Chlorine and chloramines are two things you certainly don’t want to have in any fish pond. Both can be highly toxic to fish but they are also a common additive to every public or municipal water supply in the United States.
How Do Fish Survive Winter in Ponds?
Fish can’t exactly migrate like birds do in the winter. So, what do they do, particularly fish that live in ponds where the water freezes over in winter? While fish living in the sea or in rivers have the option of migrating to warmer waters (and moving water is less likely to freeze in the …