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Originally Posted by brad
I'm assuming it's effects on ph are also time limited right?
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What I find is that pH lower somewhat over time naturally in a my tanks. So, any gradual change in the pH lowering effects seem to be offset by a natural lowering of the pH from the maturation of the tank. It's that immediate effect of lower pH, though, that helps get the plants settle in and take off faster-- right away they are in great and preferred conditions.
Start-up had always been the the most perilous time for me. So the advantage of having the the substrate contribute to the initial stability/establishment of desired parameters for most plants is a really helpful thing.