SERA Calcium Test (Ca) — Drop test for marine aquariums (15 ml)

Precise calcium control in 20 mg/l (ppm) increments — complete kit for measuring Ca in saltwater aquariums, sufficient for approximately 7,500 mg of calcium.

Short description

SERA Calcium (Ca) drop test for marine aquariums — precise measurement of calcium in 20 mg/l increments. Complete kit (kyvette, syringe, measuring spoon, reagents) and simple instructions for reliable monitoring of Ca, essential for the growth of corals and invertebrates.

Long description

The SERA Calcium Test (Ca) allows for highly accurate determination of the calcium content of seawater in 20 mg/l (ppm) increments. Calcium is a key element in the reef environment: it influences coral calcification, invertebrate health, and the overall balance of the system. This complete kit contains all the necessary accessories for performing multiple reliable and repeatable measurements.

Main features:

• Accuracy: reading in 20 mg/l increments for fine adjustment of Ca.
• Volume: 15 ml reagent bottle(s) (complete kit), test capacity for approximately 7,500 mg of total calcium.
• Accessories provided: graduated kyvette (5 ml), syringe, measuring spoon, results evaluation card and instructions (video QR code sometimes included by the manufacturer).
• Use: specially optimized for marine aquariums and reefs.

Instructions for use (step-by-step summary)

Read the full instructions included with the kit before use. Here is a summary of the procedure:

• Rinse the kyvette several times with the water to be tested then fill up to the 5 ml line.
• Add 8 drops of reagent 1, mix gently.
• Add the level spoonful of reagent 2, mix (do not shake vigorously).
• Add reagent 3 drop by drop, counting the drops; shake gently after each drop.
• When the color changes from pink → violet → blue, stop counting: number of drops × 20 = concentration in mg/l (ppm) of Ca.
• Clean the kyvette under running water after the test and close the reagent bottles immediately.

Interpretation and recommended actions

• General target value for reef aquarium: approximately 400–450 mg/l (adjust according to species present).
• If Ca is too low: gradually increase calcium (specific products such as "Component 1 Ca" or equivalents) and monitor frequently.
• If the Ca is too high: perform a partial water change until normalization occurs.

Contraindications and precautions

Caution: Some reagents may contain corrosive substances (e.g., sodium hydroxide). Avoid contact with skin and eyes; if contact occurs, rinse thoroughly and consult a doctor if necessary. Do not ingest. Keep out of reach of children. Store in a cool, dark place.

Kit contents

• Reagent bottles (15 ml) — reagent 1, reagent 2, reagent 3
• 1 graduated 5 ml flask
• 1 syringe (for sampling/rinsing)
• 1 measuring spoon
• Instructions and evaluation card (video QR code depending on batch)

Technical specifications

• Test type: drops (drop test)
• Precision: 20 mg/l per step
• Reagent volume: 15 ml
• Manufacturer reference: SERA Calcium Test (Ca)
• Compatibility: marine aquariums / reefs