or, the ultimate IMHO calculator, the essential desktop tool for
aquarists
http://www.esbconsult.com.au/esbcalc/index.html ESBUnitConv v2.0.1
and it is free.

Thanks to Razor who pointed me to it.
NetMax

"Haywire"  wrote in message
news:Xns9302F3885CEF2undisclosednospamcom{at}66.185.95.104...
> sigh you silly people :), the last on the planet to abandon the
imperial
> measure.  You'd think after your declaration of independance from the
> british empire you'd gladly adopt metric.
>
> 3.76 L to a U.S. Gallon.
>
> "kush"  wrote in
> news:CeJU9.40127$uL2.16528{at}nwrddc01.gnilink.net:
>
> > I doesn't work for lazy Americans such as myself who can't be
bothered
> > learning how to convert gallons to liters.
> >
> > Matt  wrote in message
> > news:a1c5f6aa.0301131440.18b04257{at}posting.google.com...
> >> Water changes are the most widely used way of controlling nitrate
> >> levels in an aquarium. Everyone has their own recommendations on how
> >> many water changes you need to make, but in truth, it's impossible
to
> >> tell unless you test the effect that they are having upon your water
> >> and act accordingly.
> >>
> >> In some tanks, a monthly 25% water change might be fine for keeping
> >> the nitrate level low, but in others you might need to make a 25%
> >> every week, or change 30-40% every month.
> >>
> >> This calculator works out how many water changes, and what size what
> >> changes, you need to make in order to keep the nitrate level at
about
> >> the same level as your source water.
> >>
> >>
> >
http://www.practicalfishkeeping.co.uk/pfk/pages/water_change_calculator
> > .php
> >
> >
> >
>
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