Hannah ph checker

[snarky shark]

How often do those who have this need to re- calibrate? Seems like I just recalibrate 2 weeks ago and ph was coming in at 7.4 but did a sustained test with API test kit and came in at 8.2. I'm going to get done more solution today to calibrate and verify. Ugh, the maintenace on things to maintain your tank.

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