Seachem One Year Alert Combo – Year-Long pH & Ammonia Monitoring for About a Dollar a Month

A Full Year of Effortless pH and Ammonia Monitoring

pH swings and rising ammonia are two of the most common threats to aquarium fish, and both can climb unnoticed between test kit checks. Constant testing is tedious, and lapses are exactly when trouble strikes.

The Seachem One Year Alert Combo pairs Ammonia Alert and pH Alert, easy-to-use color-changing sensors that continuously monitor both parameters for a full year, at about a dollar a month. There are no strips to dip or chemicals to mix; you simply place the clear, unobtrusive devices in your aquarium and read them at a glance. Ammonia Alert detects less than 0.05 mg/L free ammonia, while pH Alert tracks shifts between 5.4 and 8.0.

Both monitors are made by Seachem Laboratories, the chemistry-driven company founded in 1979 in Madison, Georgia, USA, whose products are developed in-house by its own chemists. That scientific foundation is what makes the Alert series so accurate and well-engineered: instead of reporting total ammonia the way most kits do, the Ammonia Alert sensor responds only to the toxic free ammonia form, so a full year of monitoring stays focused on the parameter that truly threatens fish.

1. Place Ammonia Alert and pH Alert in a visible location in your aquarium.
2. Let the sensors equilibrate, then read the color at a glance.
3. Act the moment a color shift signals rising ammonia or a pH change.

Get a year of peace of mind for pennies a day. Add to cart.

What It Does

The combo offers an extremely sensibly priced way to continuously monitor two vital aquarium water parameters, pH and ammonia, for a year with no strips to dip or chemicals to mix. Ammonia Alert changes reversibly from yellow to green to blue relative to the ammonia concentration, detecting levels less than 0.05 mg/L (ppm) of free ammonia, and measures just 1.5" x 2.5" for marine or freshwater aquarium use. pH Alert monitors pH continuously and changes color reversibly to alert you to shifts in pH levels between 5.4 and 8.0, measures just 1.5" x 2.5", and is for freshwater aquarium use only.

How to Use

Simply place Ammonia Alert and pH Alert in a visible location in your aquarium. Clear and unobtrusive devices won't detract from the view of your aquarium.

Details

Combo pack includes a one-year supply of Seachem Ammonia Alert and Seachem pH Alert.

Why Seachem One Year Alert Combo

• A full year of coverage: both sensors monitor continuously for a year at about a dollar a month, so protection doesn't lapse between test-kit checks.
• Continuous, at-a-glance reading: the reversible color change updates on its own around the clock, letting you spot rising ammonia or a pH shift the moment it happens.
• Reads only the toxic free ammonia: Ammonia Alert responds to the free ammonia form that harms fish, detecting less than 0.05 mg/L, while pH Alert tracks shifts between 5.4 and 8.0.
• No strips or chemicals: nothing to dip or mix, and both clear devices measure just 1.5" x 2.5" so they stay unobtrusive in the tank.

Best For

Ideal for aquarists who want a full year of hands-off protection, for new and cycling tanks where ammonia spikes are most dangerous, and for quarantine setups needing constant reassurance. Use both together in freshwater tanks; in marine systems rely on Ammonia Alert, since pH Alert is for freshwater use only.

FAQ

Freshwater or saltwater? Ammonia Alert works in both marine and freshwater aquariums, while pH Alert is for freshwater use only.

How long does it last? The combo includes a one-year supply of both Ammonia Alert and pH Alert, monitoring continuously for a full year.

Does it read total or free ammonia? Ammonia Alert reads only the toxic free ammonia, changing reversibly from yellow to green to blue and detecting less than 0.05 mg/L.