Reef Charge | SKU: RC-HS-CAL-16

Hydroshock Calcium | Part 1

Name: Hydroshock Calcium | Part 1
Rating: 5 (3 reviews)

$16.99

Shipping calculated at checkout.

(3)

Size

16 fl oz 64 fl oz 128 fl oz

Pickup available at New Dawn Aquaculture

Usually ready in 1 hour

CALCIUM | STRONTIUM | TRACE

Hydroshock Calcium is a calcium supplement enriched with carefully balanced trace elements, formulated to meet the exact needs of reef aquariums. It ensures robust coral skeletal growth by precisely replenishing calcium consumed during coral calcification. This formula incorporates essential trace elements such as strontium, potassium, manganese, zinc, molybdenum, vanadium, and cobalt, matching their natural ratios in coral skeletons. Regular use alongside Hydroshock Alkalinity and Magnesium supports vibrant coral coloration, optimal growth, and overall reef health without causing trace element imbalance.

Directions / Mode d’emploi

DIRECTIONS

USE

Part 1 of 3. Dose equal volumes of Parts 1, 2 and 3 daily.

DOSE

Start at 1 mL of each part per 100 L (26 US gal) daily. 1 mL per 3.785 L (1 US gal) adds about 15.9 ppm calcium. Test Ca, Alk and Mg regularly and adjust all three parts together.

LIMIT

Dosing Part 1 alone: max +20 ppm calcium in 24 h. Retest before repeating.

CAUTION

Dose into high flow, 10 min apart from Part 2. Never mix concentrates. Store sealed, cool (≤25 °C) and dark.

For aquarium use only. Do not ingest. Irritates eyes and skin. Keep out of reach of children.

MODE D’EMPLOI

USAGE

Partie 1 de 3. Doser chaque jour des volumes égaux des parties 1, 2 et 3.

DOSAGE

Commencer à 1 mL de chaque partie par 100 L (26 gal US) par jour. 1 mL par 3,785 L (1 gal US) ajoute environ 15,9 ppm de calcium. Tester Ca, Alc et Mg régulièrement et ajuster les trois parties ensemble.

LIMITE

Partie 1 seule : max +20 ppm de calcium en 24 h. Retester avant de répéter.

PRUDENCE

Doser dans un fort courant, à 10 min de la partie 2. Ne jamais mélanger les concentrés. Conserver fermé, au frais (≤25 °C) et à l’abri de la lumière.

Pour aquariums seulement. Ne pas ingérer. Irrite les yeux et la peau. Tenir hors de la portée des enfants.

Ingredients

Purified RO/DI water
USP-grade calcium salt
Ionic strontium & potassium (USP-grade complex)
Chelated USP-grade trace-metal package: manganese, zinc, molybdenum, vanadium, cobalt

Storage

Store tightly sealed in a cool, shaded location (≤25°C).
Protect from direct light.
Shelf-life: 24 months.

Safety Information

Not for human consumption.
Keep out of reach of children.
Causes eye and skin irritation.
Avoid contact with eyes, skin, or clothing.

Choose a parameter

Select the result from your latest test.

Selected parameter

ALK Alkalinity

Reference range 7–13 dKH

Why it matters

Carbonate buffering and daily calcification demand.

Your aquarium

Example values are marked until you change them. Use your actual water volume and measured readings; changing the parameter or product keeps the volume you entered. Daily dosing recommendations appear with your result.

System water volume

Volume unit

Your readings stay in this browser.

Recommended formula

Enter measured values

Review the suggested values or enter your own, then calculate the amount and dosing recommendations.

Reefkeeper reviews

5 Based on 3 reviews

5/5 Evan Cross Verified buyer Jul 5, 2026

Loving Hydroshock

All the trace in this bottle has really helped my corals

5/5 Reeferking Verified buyer Jul 5, 2026

Best quality product

Amazing, 10/10

5/5 Carly Ballou Verified buyer Jul 5, 2026

Hydroshock

I’m dosing all 3 bottles of Hydroshock, my corals have been much happier. I like it better than a 2 part.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.