Red Sea 4-Part Complete Reef Care Dosing System

Red Sea 4-Part Complete Reef Care Dosing System

Red Sea 4-Part Complete Reef Care Dosing System is a four-bottle marine conditioner that replenishes all 36 major, minor and trace elements corals use up in a reef aquarium. It is built for reefkeepers who want to support coral growth and coloration with a simple routine of four bottles and one test per week.

Key Benefits

• Replenishes all 36 major, minor and trace elements that corals draw down regularly
• Based on Red Sea's 30 years of research into the needs of corals in artificial environments
• Simple routine: four bottles and one test per week
• The elements are used up in relatively predictable ratios, so a single weekly calcium test sets the dose for all four parts
• The four parts are supplied in the same ratio they are dosed in, so all four bottles run out at the same time
• Pairs with the ReefDose 4 dosing pump for automated dosing
• Offered in three sizes to match your tank volume

How to Use

Test calcium once per week. Use the result to work out your Bottle 1 dose, then set the doses of the other three parts from that figure. Start with the recommended amount printed on the Bottle 1 label.

For hands-free dosing, connect the system to a ReefDose 4 (sold separately). It has the right number of dosing heads for the four parts. Once connected, the ReefBeat app automatically adjusts the doses of Bottles 2, 3 and 4 based on the dosage volume you select for Bottle 1.

Dosage

• Bottle 1 (Calcium): start by dosing the recommended amount on the bottle.
• Bottle 2 (Alkalinity): dose 2x the volume of your Bottle 1 dose.
• Bottle 3 (Iodine & Potassium): dose 1/2 the volume of your Bottle 1 dose.
• Bottle 4 (Iron & Bioactive Elements): dose 1/2 the volume of your Bottle 1 dose.

Suitable For

• Reef aquariums with corals that need all major, minor and trace elements replenished
• Reefkeepers who prefer a structured, low-maintenance dosing routine
• Reef tanks run with a ReefDose 4 and the ReefBeat app

Compatibility

Designed to work with the ReefDose 4 dosing pump (sold separately). If your aquarium uses a macro algae refugium, Red Sea recommends its 7-part Reef Foundation and Trace Colors system instead. That lets you adjust individual trace elements to account for their unique uptake ratio by macro algae.

Available Sizes

• Small: recommended for aquariums up to 40 gallons / 150L (approx. 3 month supply)
• Medium: recommended for aquariums up to 80 gallons / 300L (approx. 3 month supply)
• Large: recommended for aquariums larger than 160 gallons / 600L (approx. 3 month supply)

What's Included

• Bottle 1: Calcium
• Bottle 2: Alkalinity
• Bottle 3: Iodine & Potassium
• Bottle 4: Iron & Bioactive Elements

The ReefDose 4 dosing pump is sold separately.

Frequently Asked Questions

How often do I need to test my water?
Red Sea recommends testing calcium once per week. The elements are used up in relatively predictable ratios, so that one result is used to set the dose of all four parts.

How much of each bottle should I dose?
Start with the amount recommended on the Bottle 1 (Calcium) label. Dose 2x that volume of Bottle 2 (Alkalinity), and 1/2 that volume each of Bottle 3 (Iodine & Potassium) and Bottle 4 (Iron & Bioactive Elements).

Which size should I choose?
Match the size to your tank volume. Small is recommended for tanks up to 40 gallons / 150L, Medium for tanks up to 80 gallons / 300L, and Large for tanks larger than 160 gallons / 600L. Each size is rated at approx. 3 months of supply.

Do I need a ReefDose 4 to use this system?
The source does not make it a requirement. It is a convenient pairing: the ReefDose 4 has the right number of dosing heads, and the ReefBeat app automatically adjusts the doses of Bottles 2, 3 and 4 from your Bottle 1 setting. The pump is sold separately.

Will all four bottles run out together?
Yes. The four parts are supplied in the same ratio they are dosed in, so you should finish all four bottles at exactly the same time.

Can I use it if my reef tank has a macro algae refugium?
Red Sea recommends its 7-part Reef Foundation and Trace Colors system for tanks with a macro algae refugium. That system lets you adjust individual trace elements for the unique uptake ratio of macro algae.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.