Seachem pH Alert

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Seachem pH AlertSeachem pH Alert is the continuous-monitoring counterpart to Ammonia Alert: a small in-tank sensor that displays your pH at a glance, all the time, with no tubes or reagents. Its color tracks the water's pH constantly, so instead of running a test you simply look at the disc — and like its sibling, a single unit lasts over a year.Continuous pH monitoring is genuinely useful in a planted, CO₂-injected tank, where pH naturally drifts down as CO₂ goes in and back up as it gasses off through the day. Having an always-visible reading helps you spot a CO₂ problem or an unexpected pH swing the moment it happens, rather than discovering it at your next scheduled test.Good to Know: The Alert gives you an at-a-glance trend and early warning; when you need an exact figure (say, to pair with KH for a CO₂ calculation), reach for a liquid pH test. Used together, the disc tells you when something is moving and the test tells you precisely how far.How to Use: Place the sensor on the inside glass where you'll see it, and read its color against the key; give a new unit a few days to settle in. Clean only by gently wiping algae with a soft cloth, never touch the sensor pad directly, and remove it during colored-dye treatments. Show more