To each there own. I bought this years ago on Kevin at RCs recommendation to save a few bucks. But I will say, these are quite simple, Its a simple measure of conductivity, that's it. I highly doubt a bottle of distilled water or new filters and media will read 10ppm, in fact if it did, I'd just use that as my baseline instead of 0, its not a ph probe. Just offering something up that costs a lil less is all.
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Do you smell that? Just waaalk away...... sloooowly
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