Just because you could do this in 1965 does not mean it should be done, now. THIS IS TERRIBLE ADVICE! [Please forgive my shouting, but I sincerely hope no one follows your suggestion.]
It *will* kill or seriously injure your fish. In particular, it will stunt babies and leave them with injured gills. Growth rate of all your fish will be retarded.
I have known several champion-level show-winning breeders, and a lot of less-well-known ones who stubbornly refused to face the fact (or did not know) that our water now usually has chloramine, and hypo releases a serious burst of ammonium. The damage is subtle and long-term if you do partial changes. If you do 100% changes, and your pH is above about 7.5, it is often quite fatal as some of the ammonium becomes deadly ammonia.
Never, ever use hypo or "Novaqua"-type products unless you really know your water chemistry, very well. Ammonia is really nasty stuff. We now know, through experience in the aquaculture industry, that harmful levels of ammonia happen at way below levels we can test -- typically 10 to 100 times less than the lowest reading on hobby test kits. Doing something that releases any into the water is simply foolish.
Wright
Paul_Jablinski at notes.udayton.edu wrote:
To remove clorine from the water put one drop of hypo into the water. One drop will clear one gallon of clorine from the water. I do not know what the effect it has on fish over a period of a long time. I have used it and there were no ill effects. Of course, I don't use it all the time; only when there is an emergency. Br. Paul
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