A few potential causes (I fought off sleep and read through several gargantuan threads on RC!):
1) High (organic) phosphates?
2) New house, new area, new water source/water treatment plant? Some use Chloramine?
3) Salt mix. Did you switch salt mixes? I just read that some salt brands are using many times the natural amount of Borate in order to keep the mix in solution. As I understood/read it, high levels of Borate skew test readings for Alkalinity (ie. the true dKH will be much lower).
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~Drew
10G Nano * 10G Sump * Deltec MCE 600 Skimmer * JBL Viper 150w MH * Zeovit * Vortech MP40W
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon. ~S. Ertz
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