Description
Seachem Alerts Combo Pack (6-Month) — Continuous Ammonia and pH Monitoring System for Aquariums
The Seachem Alerts Combo Pack “6-Month” (SKU: 725033-12) combines two of Seachem’s innovative continuous-monitoring sensors—Ammonia Alert and pH Alert—into a single maintenance kit; its “Warning Bands” measure ammonia and pH in aquariums. Engineered for freshwater and marine aquariums, these colourimetric sensor cards remain submerged in the water column to provide constant, real-time visual readings without requiring test tubes, chemical reagents, or periodic liquid testing kits.
By using proprietary sensor technology, the Ammonia Alert sensor detects toxic free ammonia gas rather than harmless ionised ammonium, helping aquarists prevent unexpected livestock losses. Meanwhile, the pH Alert sensor continuously tracks shifts in pH between 5.4 and 8.6, changing colour dynamically as parameters fluctuate. Compact and unobtrusive, both sensors offer continuous monitoring for up to 6 months.
Usage & Application
When to Use
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New Tank Setup: Essential for tracking bio-filter establishment during cycling without taking daily manual liquid test samples.
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Continuous System Safeguard: Ideal for monitoring sensitive breeding tanks, planted aquascapes, and marine reef displays vulnerable to sudden parameter shifts.
Placement & Usage Guide
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Suction-cup both sensor units directly to the inside glass wall of the aquarium in an area of clear visibility and moderate water circulation.
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Avoid placing sensors near bright light fixtures, air diffusers, or chemical filter media discharges to ensure accurate readings.
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Colour sensors adjust within 15–30 minutes of installation; replace units every 6 months to maintain visual accuracy.
Maintenance of the Seachem Alert Combo™ 6 Month
If there is lichen, simply wipe it with a clean, soft material. Avoid touching the sensor with your fingers, as skin oil can damage the sensor. Do not use bleach, soap, detergent, or hard objects to clean the sensor. For maximum accuracy, readings should be taken under natural light or white light.
Product Specifications & Highlights
Key Features
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Dual-Parameter Continuous Tracking: Provides constant visual monitoring of both pH levels and free toxic ammonia gas.
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Free Ammonia Detection: Selectively measures toxic gas (NH₃) rather than non-toxic ammonium (NH₄⁺), preventing false alarms.
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No Test Strips or Reagents: Eliminates the need for manual liquid sampling, test tubes, and colour charts.
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Compact Glass Mounts: Unobtrusive design attaches cleanly to interior aquarium glass via durable suction cups.
Product Details
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Brand: Seachem
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SKU: 725033-12 (Internal ID: 130749)
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Barcode (GTIN/UPC): 000116001205
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Product Type: Aquarium Testing & Monitoring / Continuous Colourimetric Sensors
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Package Dimensions: 130 mm (L) × 20 mm (W) × 180 mm (H)
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Gross Package Weight: 45 g
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Included Sensors: 1x Ammonia Alert & 1x pH Alert
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Target Environment: Freshwater & Marine Aquariums
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Sensor Lifespan: 6 Months of Continuous Operation







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