Lately the PH of my tank has made huge daily swings but mainly stays in the high .3 to low .4. All winter and honestly sense I setup my apex in the fall my ph has stayed below 8.3 in a range to 8.1. For whatever reason my ph seems to be rising with yesterday ph reaching 8.49. Not sure exactly what causes this but I'd love to learn. Aside from that I'll be getting some ph calibration solution for my probe.
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