JBL Magnesium Test – For Freshwater Aquariums
The JBL Magnesium Test is a precision water testing kit specially developed for freshwater aquariums. It allows aquarists to accurately monitor magnesium (Mg²⁺) levels — a critical parameter for maintaining healthy aquatic plants and stable water chemistry.
Magnesium, along with calcium, contributes to general hardness (GH) and plays an essential role in photosynthesis and enzyme function in aquatic plants. Many water sources contain insufficient magnesium, leading to stunted growth, pale leaves, or poor plant vitality. This test kit provides reliable, laboratory-grade accuracy to help you maintain ideal magnesium levels for your specific aquarium setup.
🌿 Why Test for Magnesium?
Magnesium is one of the vital macro-elements plants need to build chlorophyll and absorb nutrients effectively. Without sufficient magnesium, plants cannot efficiently utilize nitrogen, potassium, and iron — leading to nutrient imbalances and possible algae issues.
Using the JBL Magnesium Test regularly ensures that your water parameters remain within the ideal range (5–10 mg/l), promoting vibrant, healthy plant growth and reducing maintenance concerns.
⚙️ Key Features
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🔬 Precision Measurement: Accurately determines magnesium concentration (mg/l) in freshwater aquariums.
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🌱 Supports Plant Growth: Ensures plants receive the magnesium required for photosynthesis and nutrient absorption.
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💧 Easy to Use: Clear step-by-step instructions with a colour-change indicator for reliable readings.
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🧭 Prevents Nutrient Deficiencies: Helps identify magnesium shortages before they affect plant health.
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🪸 Compatibility: Suitable for community tanks, aquascapes, and African cichlid setups (Lake Malawi & Tanganyika).
📏 Recommended Magnesium Values
| Aquarium Type | Ideal Magnesium Range (mg/l) |
|---|---|
| Community Aquariums | 5–10 mg/l |
| Lake Malawi / Tanganyika | 5–10 mg/l |
| Planted / Aquascaping Tanks | 5–10 mg/l |
| Marine Aquariums | ❌ Not suitable – use JBL Mg/Ca Test for Saltwater |
📦 What’s Included
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1x Test reagent set
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1x Measuring syringe
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1x Test vial
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1x Colour comparison chart
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1x Multilingual instruction manual
🧭 Directions for Use
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Rinse the test vial with aquarium water.
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Fill with the indicated amount of sample water.
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Add reagent drops as per instructions.
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Observe the colour change and compare with the provided chart.
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Record your magnesium reading (mg/l).
Perform regular tests (weekly or bi-weekly) to ensure consistent water stability.
💡 Ideal For
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Planted Aquariums and aquascapes
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Community Fish Tanks
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Cichlid Aquariums (African Lakes)
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Beginners & Experienced Aquarists seeking stable and natural water chemistry
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