Rhodomonas - Live Phytoplankton The ultimate nourishment for your marine ecosystem. Specially cultivated to enhance the health and vibrancy of your aquatic life, our Rhodomonas phytoplankton is a live, highly nutritious feed that supports a wide range of marine organisms, from the tiniest zooplankton to larger species such as clams, coral, and filter-feeding invertebrates. High Nutritional Content Rich in essential fatty acids, proteins, and carbohydrates, Rhodomonas provides a balanced diet that promotes growth, health, and color vibrancy in marine life. Enhances Water Quality Our live phytoplankton helps maintain the ecological balance of your aquarium by absorbing excess nutrients, thereby reducing harmful nitrates and phosphates and improving water clarity. Boosts Natural Ecosystem Regular use encourages the development of a healthy, sustainable microfauna and microflora ecosystem within your aquarium, mimicking the natural marine environment.

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Manganese²⁵+ is a concentrated manganese supplement for reef aquariums. It is intended for occasional correction when ICP analysis shows manganese depletion. Manganese plays a key role in zooxanthellae photosynthesis, enzyme activation, and Goniopora tissue vitality. Manganese²⁵+ contains manganese alone, without other trace metals, for precise and controlled correction of reef systems. Each mL increases manganese by 10 µg/L (10 ppb) per 100 L (26 US gal). Instructions Test manganese with a reliable ICP test before dosing. Calculate dose: 1 mL per 100 L = +10 µg/L manganese 1 mL per 50 L = +20 µg/L manganese Dose safely: Do not increase manganese by more than 10–20 µg/L per day. Add slowly into a high-flow sump or dose automatically in micro-increments. Re-test before repeating. Example: In a 100-gallon system, 3.8 mL raises manganese by ~+10 µg/L. Ingredients Purified RO/DI water USP-grade manganese salts Storage Store tightly sealed in a cool, shaded location (≤25 °C / 77 °F). Protect from direct light. Shelf life: 24 months. Fine precipitates may form at low temperatures; warm gently and shake before use. Safety Information Not for human consumption. Avoid contact with eyes, skin and clothing. If on skin or in eyes, rinse with water for 15 minutes. If swallowed, rinse mouth and seek medical advice. Wash hands after use. Keep out of reach of children and pets. Discard in accordance with local laws.

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Complete replacement reagent set for the Benchmark Calcium & Magnesium Test Kit. Reuse your existing sample vial, syringes, indicator scoop and testing stand. Included 118 mL Calcium Buffer 20 g Calcium Indicator powder 118 mL Calcium Titrant 59 mL Magnesium Buffer 7.5 mL Magnesium Indicator 118 mL Magnesium Titrant Best refill value: Save $22.95 compared with purchasing all six reagents separately. Need only one component? Individual Calcium Buffer, Calcium Indicator, Calcium Titrant, Magnesium Buffer, Magnesium Indicator and Magnesium Titrant are available separately. Need the testing tools too? Choose the complete Calcium & Magnesium Test Kit. Warning: Calcium Buffer contains 4% sodium hydroxide. Read every product label and SDS, wear suitable eye and hand protection, and keep out of reach of children.

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Fast, repeatable alkalinity testing for saltwater and reef aquariums. The Benchmark Alkalinity Test Kit measures from 0–20 dKH using a clear blue-to-red endpoint and an easy calculation. What’s included 118 mL Alkalinity Titrant 7.5 mL Alkalinity Indicator 10 mL sample vial 5 mL sample syringe 1 mL titration syringe Reusable testing stand with quick-read instructions How to test Add 5.00 mL of aquarium water to the sample vial. Add 2 drops of Alkalinity Indicator and swirl. The sample turns blue. Fill the titration syringe to 1.00 mL with Alkalinity Titrant. Add titrant slowly while swirling until the sample changes to red. Record the amount used and calculate dKH = mL titrant used × 10. Provides approximately 100 tests at typical reef-aquarium alkalinity levels. Already have the tools? The Alkalinity Refill Reagents are the best-value way to replace both reagents. You can also replace only the Indicator or Titrant. For aquarium testing only. Keep out of reach of children and read all product labels and safety information before use.

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Replacement calcium indicator powder for the Benchmark Calcium & Magnesium Test Kit. 20 g indicator powder Add 1 level 0.15 cc scoop after the calcium buffer Creates the pink-orange starting colour used for the stable-purple endpoint One replacement reagent only; scoop, buffer, titrant and testing tools are not included Keep the container tightly closed and dry. Use only as directed with the Benchmark Calcium Buffer and Calcium Titrant. Best value: Need every calcium and magnesium reagent? Choose the Calcium & Magnesium Refill Reagents. Need the tools too? Choose the complete test kit. For aquarium testing only. Keep out of reach of children and read the product label before use.

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Measure calcium and magnesium with one organized titration kit built for saltwater and reef aquariums. Clear color-change endpoints, quick-read scales and formulas printed on the reusable stand make both tests easy to follow. What’s included 118 mL Calcium Buffer 20 g Calcium Indicator powder 118 mL Calcium Titrant 59 mL (2 oz) Magnesium Buffer A 7.5 mL Magnesium Indicator B 118 mL (4 oz) Magnesium Titrant C Sample vial, measuring and titration syringes, indicator scoop and reusable testing stand How to test calcium Add 5.00 mL of aquarium water to the sample vial. Add 1.00 mL of Calcium Buffer. Add one level scoop of Calcium Indicator and swirl to pink-orange. Fill the Calcium Titrant syringe to 1.00 mL. Add titrant slowly while swirling; stop at the first stable purple endpoint. Calculate ppm Ca = mL of Calcium Titrant used × 600. How to test magnesium Add 5.00 mL of aquarium water to the sample vial. Add 0.50 mL of Magnesium Buffer A. Add 2 drops of Magnesium Indicator B and swirl to wine-red. Fill the Magnesium Titrant C syringe to 1.00 mL. Add titrant slowly while swirling; stop at a pure blue endpoint. Record the titrant used and calculate ppm Mg = 1944.40 × mL MG-C − 363.87 × mL CA-C. The case includes quick-read guidance for typical reef ranges of 400–600 ppm calcium and 1200–1500 ppm magnesium. Already have the tools? Choose the Calcium & Magnesium Refill Reagents for the best refill value. Need only one component? Individual Calcium Buffer, Calcium Indicator, Calcium Titrant, Magnesium Buffer A, Magnesium Indicator B and Magnesium Titrant C are available separately. Warning: Calcium Buffer contains 4% sodium hydroxide. Read every product label and SDS, wear suitable eye and hand protection, and keep out of reach of children.

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Replacement magnesium titrant for the Benchmark Calcium & Magnesium Test Kit. 118 mL of 0.400 M magnesium titrant Titrate the prepared sample from wine-red to pure blue The magnesium calculation uses both the magnesium-titrant and calcium-titrant readings One replacement reagent only; buffer, indicator, syringe and testing tools are not included Use only as directed with the Benchmark Magnesium Buffer and Magnesium Indicator. A calcium result from the paired Benchmark method is required for the final magnesium calculation. Best value: Need every calcium and magnesium reagent? Choose the Calcium & Magnesium Refill Reagents. Need the tools too? Choose the complete test kit. For aquarium testing only. Keep out of reach of children and read the product label and safety information before use.

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