🔬 KH Guardian (KHG) Alkalinity Monitor

Precision Control for a Healthier Reef

The KH Guardian (KHG) is an advanced all-in-one device that automatically monitors and manages carbonate hardness (dKH) levels throughout the day — offering one of the most accurate and reliable methods for keeping your reef’s alkalinity perfectly stable. Considered the “holy grail” of reefkeeping automation, the KHG streamlines KH control while providing peace of mind and healthier, more vibrant corals.

Key Features:

📈 Ultra-precise readings: Accurate to ±0.01 dKH

📊 Measurement range: 5.0–12.0 dKH

🧠 Smart dosing: Automatically calculates and doses sodium bicarbonate based on your target dKH, current readings, and total system volume

🔁 Fully automated: Test intervals can be set from every 30 to 240 minutes

🔗 Compatible with 3rd-party controllers (via the Advanced Interface Module) including Neptune APEX

⏱️ Fast testing cycle: Each test uses just 3–4mL of reagent and completes in 3–7 minutes

🔄 Safe reagent return: Used reagent is returned to the tank without toxicity concerns

Whether paired with a calcium reactor or used alongside other alkalinity dosing systems, the KHG ensures unmatched precision in managing one of reefing’s most critical parameters.

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🧪 KHG Concentrated Reagent Pack

Each pack contains 35g of high-purity, pharmaceutical-grade reagent, designed specifically for use with the KH Guardian system.

✨ High stability & purity for accurate testing

💧 One packet makes 1500mL of reagent when mixed with RODI or distilled water

⚖️ Lasts ~60 days with 4-hour testing intervals

🔒 No preservatives — reef-safe and formulated to protect livestock

✅ Designed for minimal error tolerance: ±1mL when properly diluted

> Note: Always follow Dr. Bridge's instructions for dilution and usage to ensure optimal performance and livestock safety.