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Re: Topping off (was: Lowering pH when adding hard water nutrients...)
William Beckerman writes:
<< OK this may fall under the heading of dumb newbie question but... When I
kept reef tanks, I always topped off for evaporation with R/O water to
keep the water chemistry from building up. Water changers were away done
with reconstituted R/O (R/O right, salt etc). Why isn't it this way in
fresh water? Many of the post seem to indicate that they top with tap
water or aged mixed water, or is just covered by big water changes every
week? >>
Salt water fish live in a very huge body of water which remains, by virtue
of its volume, virtually stable as far as the dissolved solutes (salts and
other minerals). They have not had to maintain the kind of adaptability that
fresh water fish have. They are far more sensitive to fluctuations in the
salinity, pH, KH, GH, conductivity, and whatever else there is than are fresh
water fish. Fresh water hobbyists simply don't have to be as fussy about
their water as salt water hobbyists do. I personally don't have the
motovation to do this. When I am having trouble getting a given pair of
freshwater fish to spawn for me, then I go through all the hoops until I get
what I hope is ideal water for that particular species. Otherwise, I don't
sweat it.
Bob Dixon
Cichlid Trader List Administrator º o
http://cichlidtrader.listbot.com 0
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