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PH Probe calibration
I bought a PH probe a few weeks ago. I read the instructions and calibrated as said. I dose kalk and my PH test kit reads 8.2 - 8.3 range and my probe reads 7.9 - 8.0. how do you know the probe is correct. I tested my kalk at 2 TBSP per gal and the probe read 12.65. any help would be greatly appreciated.
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75 gal,coralife 95W X4 50/50, 4" Aragonite crushed coral, Red Sea Skimmer, Wave-maker 5 Maxi Jet 1200's ,coil denitrator, And about 50 lbs of live rock.
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