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  1. P

    Test kits are vital, ...but...

    I have read here where someone started and was halfway done with a slam before the test kit arrived. And was very successful. Many many more were told to wait. So this is my question... What is THE most important criteria that must be known when/before starting a SLAM? Is it CYA? PH? I...
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    What is the XL Option

    Hi all! What is the XL option? Went to web page but didn't find/see the answer. I have k-2006, wondering if I need more/something different/new.