[GSAS-Member] Bulk chemicals - help!

[Erik Olson <erik@thekrib.com>]

For the past umpteen years, Kathy and I have foregone the pricey "Cichlid 
Salts" and mixed our own formula for our Lake Tanganyika tanks.  This 
formula consists of dumping in roughly equal parts Calcium Carbonate and 
Magnesium Carbonate.  It's cheap, it's relatively accurate for Lake 
Tanganyika, and it's not so harsh on plants.

Unfortunately, our umpteen year supply just ran out, and we're kinda 
stumped where to get more.  We tried Welch-Allyn, which has reasonably 
decent prices on both, but they cancelled our order because we're not an 
educational institution.  Bah!  How utterly annoying.

Anyway, does anyone have any ideas where one might obtain inexpensive Mag 
Carb and Calcite?  Also, if others are interested, I might try to 
coordinate a group buy.

   - Erik

-- 
Erik Olson
erik at thekrib dot com
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