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Old 02-11-2004, 06:31 PM
George Pontis
 
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In article ,
says...

So, the essentials are KH, pH, NO3, and PO4, with maybe
a permanent CO2 test as an option. Everything else is not
necessary.


And more good info at thekrib.com. You must be sure that your water does not have
much phosphate if you don't measure CO2 directly. If you need to buy a bunch of
test kits, take a look at the Red Sea Master Freshwater Kit. That has a pretty
complete assortment of tests for planted tanks including KH, CO2, Iron (Fe), and
the usual stuff such as pH, ammonia, nitrite, and nitrate.