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  1. General Planted Tank Discussion
    Excel is truly great in a number of situations, but I am wondering if there is a point (WPG, tank size, dosing levels, cost [obviously], etc) when it is no longer viable as an alternative to real CO2. I understand the basic chemistry of the stuff, I can see how the glutaraldehyde isomer works...
  2. Fertilizers and Water Parameters
    curious as iv'e gotten rid of my diy co2 on my low-tech tank and opted for excel instead. wondering if it will effect ph any? the one great benefit of diy co2 was lower ph for my tap water.
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