Well, I'm not saying it's the only method but for high light CO2 enriched
tanks...........about the time many folks stopped having algae problems.
Also about the time that folks tried themselves. About the the time folks
started winning contenst. About the time folks got sick and tired of
testing and guessing if their test kits were even correct. About the time
folks realized that the methods are reproducible.About the time folks were
looking for a good cheap method rather than RO water for changes, PO4
removers etc and about the time folks with rock hard water realized they
did not have to have soft water to have jamming tanks..