ASF Reef Shot – Calcium

Fast & Precise Calcium Boost for Reef Aquariums

ASF Reef Shot Calcium is a ready-to-use, single-dose calcium supplement designed to quickly increase or maintain optimal calcium levels in reef aquariums.
Calcium is a critical building block for stony corals, clams, and coralline algae, supporting skeletal growth and long-term reef stability.

Maintaining calcium levels between 400–450 ppm is essential for healthy coral growth and proper calcification.

Why You’ll Love It

• Fast-acting calcium supplementation

• Supports coral growth and skeletal formation

• Single-dose vial (20 ml) – no measuring, no guesswork

• Ideal for reefs with high calcium consumption

• Easy integration into any reef maintenance routine

• Made for modern reef systems

Directions for Use

• Shake well before use

• Dose 1 vial (20 ml) per 200 liters / 50 gallons

• Add every other day

• Pour gently into a high-flow area of the aquarium

• Wait at least 5 minutes before dosing any other product

• Do not mix with other products prior to dosing

 A weekly 10–20% water change using a high-quality reef salt (such as Reef Evolution Salt) is strongly recommended for optimal results.

⚠️ Important Safety Information

• Avoid direct contact with marine organisms

• High localized concentrations may be harmful

• Do not overdose

• Keep out of reach of children

• For marine aquariums only

Product Specifications

• Brand: ASF Aquarium Systems

• Product Name: Reef Shot – Calcium

• Type: Calcium supplement

• Format: Single-dose vial

• Volume: 20 ml

• Recommended Calcium Level: 400–450 ppm

• Aquarium Type: Reef / Marine only

Francois Neo – AquariumPartner Insight

Reef Shot Calcium is perfect when your reef shows rapid calcium consumption or fluctuating levels. It allows quick correction without destabilizing alkalinity or overall water chemistry when used properly.