Red Sea
Red Sea Reef Foundation A, B, C - 3-Pack (3 x 250 mL)
Red Sea Reef Foundation A, B, C - 3-Pack (3 x 250 mL)
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Red Sea Reef Foundation A, B, C is a complete three-part dosing system designed to maintain the core water chemistry parameters every reef tank depends on: calcium, alkalinity, and magnesium. Rather than relying on a single two-part solution or calcium reactor alone, the Reef Foundation system gives you independent control over each parameter so you can dial in and hold the precise balance your corals need to build skeleton, maintain tissue integrity, and grow with consistency.
Each component works as part of a balanced system. Foundation A supplies calcium, Foundation B maintains alkalinity and carbonate levels, and Foundation C addresses magnesium — the often-overlooked parameter that underpins both calcium and alkalinity stability. Using all three together is what makes the system effective.
Why we love it
- Independent control over calcium, alkalinity, and magnesium without parameters pulling each other out of balance
- Highly concentrated formula — a little goes a long way, especially in smaller systems
- Predictable and clean — mixes clear and doses without clouding the water
- A natural starting point for reefers transitioning away from kalkwasser or two-part into a more structured dosing routine
- Compatible with manual dosing or any standard dosing pump
Recommended daily dosage
Dose per 100 L (25 gal) to raise each parameter by approximately 1 unit. Adjust based on coral consumption and regular testing:
| Component | Raises | Dose per 100 L |
|---|---|---|
| Foundation A | Calcium ~8 ppm | 1 mL |
| Foundation B | Alkalinity ~0.36 dKH | 1 mL |
| Foundation C | Magnesium ~4 ppm | 1 mL |
Start low, test every few days, and increase dose incrementally as needed.
How to use
Dose each component separately, ideally at different times of day to avoid interaction in the water column. Add directly to a high-flow area of the sump, or dose via a dosing pump on a timed schedule. Always test calcium, alkalinity, and magnesium before starting, and retest after the first week to establish your tank's actual consumption rate before increasing doses.
Storage
Store in a cool, dry place away from direct sunlight. Keep lids tightly sealed between uses. No refrigeration required.
What's in the box
- 1 x Red Sea Reef Foundation A – 250 mL (Calcium)
- 1 x Red Sea Reef Foundation B – 250 mL (Alkalinity/Buffer)
- 1 x Red Sea Reef Foundation C – 250 mL (Magnesium)
Collapsible content
LIGHT
LOW: Place coral at the bottom of the tank. Depending on the type, coral may need to be placed off sand and therefore mounted on a ceramic disc of piece of rock.
MEDIUM: Place coral at mid-range of the tank. Best placed/glued on top of a rock scape at mid-range height.Â
HIGH: Place coral from mid range to just below water level. SPS coral are shallow growing so they require and are able to tolerate intense light.
FLOW
LOW: Most soft coral do well with a small, gentle pulse. There are certain corals that can even be placed in areas of indirect flow, meaning places aside a rock structure or set into a entrance to a cave style space.
MEDIUM: Many LPS types of coral prefer medium pulse current. Most Euphyllia or corals that have more tissue structure connected to their skeleton, don’t like to be in a high flow area like the direct flow of the wave pump.
HIGH: Similar to high light, SPS enjoy being in some heavy current. Most LPS and SPS that branch encrust or plate prefer high flow that simulates the top water waves.
SKILL
ENTRY: While some may say beginner level, "Entry" is a good term to be used when starting out in the world of corals and marine life. Prior to adding livestock, you want to ensure that your reef has the proper parameters including zero levels of ammonia and nitrite. Seeing traces of nitrate in your waters is a good sign - just keep them at a lower level of 2ppm to 10ppm. Maintaining correct temperature and salinity are a huge factor to stable parameters. Starting to monitor your PH, alkalinity, calcium and magnesium is a great habit to get into to keep a successful reef.
While some soft coral don’t require too much light, having a proper reef light that puts out the proper pars is very important. You'll also want to have a good amount of flow and protected rock areas, as placing corals in their happy spot is ideal for success.
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