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Old 11-05-2013, 10:34 PM
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Quote:
Originally Posted by asylumdown View Post
According to my Apex, the pH in my tank hovers between 2.4 and 2.8. Apparently the absence of a probe is quite acidic...

The one thing I would mention about reef buffer is to be careful about how you interpret your alkalinity readings after you use it. Reef buffer contains a significant amount of borate, which contributes to total alkalinity. If your'e using a single reagent titration test kit for carbonate (i.e., you add a single coloured reagent directly to your water until there is a colour change) to measure your dKH, you're measuring total alkalinity.

I ran in to a problem when I was a newb where I was adding too much reef buffer and not enough carbonate/bicarbonate. My dKH was consistently reading in the 8-9 range, but then all the tips of my corals started burning, then whole colonies started practically self immolating. I bought the Seachem test kit that allows you to test for both borate and total alkalinity and discovered that my carbonate alkalinity as measured in dKH was down around 4.5 or something ridiculous.
Hmmm, really?? I dose Seachem Reef Buffer (and have for a couple years) and keep my dKH around 8 or 9 (API, which is a single reagent test). I have in the past also tested with Elos or Salifert (can't remember which one), but the results were basically the same (just a finer granularity), so I went back to the API.

I have a lot of SPS in my tank and so far no problems. But now you have me worried. I may have to go out and buy another KH test kit. Is Seachem the one you recommend?

And I also have not tested pH for a year or more.
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