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Discussion Starter · #1 ·
Is less more? We were using one that was 10ppm, but I just bought a new one that is 200ppm, assuming that more meant that it would be more effective. However, I just read something online that made it seem like a lower number was better because there is a lower risk of killing good flora.<br><br>
Help, I'm confused! <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/innocent.gif" style="border:0px solid;" title="shy">
 
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