Red Sea Reef Foundation Bis the alkalinity (KH) supplement in Red Sea’s Reef Foundation ABC program. This1 kg (2.2 lb)powder delivers the carbonate and bicarbonate buffer that stabilizes pH and supplies the alkalinity corals draw on to build their skeletons—an economical way to keep KH rock-steady in busy SPS and LPS reef tanks.
Build the full program with more Red Sea reef care and additives & supplements at Squeaky’s Aquatics.
Why Reef Foundation B
- Stabilizes alkalinity & pH— replaces the carbonate corals consume as they grow.
- Part of the ABC system— works alongside Foundation A (Calcium) and Foundation C (Magnesium) for balanced skeletal growth.
- Economical 1 kg powder— far more dosing per dollar than pre-mixed liquids; ideal for larger systems.
- Make your own solution— dissolve into a stock dosing solution or add directly per the program.
- Reef-grade purity— formulated for marine reef aquariums.
Dosing & Use
- Dose to your tank’s measured alkalinity uptake, following Red Sea’s Reef Foundation program.
- Never add more than 60 g at once, regardless of tank size; space larger amounts 10 minutes apart to avoid precipitation.
- Test alkalinity weekly and keep Calcium, Alkalinity, and Magnesium in balance.
- For a stock solution, dissolve 1 kg into roughly 100 L (per Red Sea’s KH guidelines).
Specifications
| Brand | Red Sea |
| Product | Reef Foundation B — KH/Alkalinity |
| Form | Powder concentrate |
| Size | 1 kg (2.2 lb) |
| Maintains | Carbonate alkalinity (KH) & stable pH |
| Program | Use with Foundation A (Ca) & C (Mg) |
| For | Saltwater reef aquariums |
Recommended Pairings
- Red Sea Reef Foundation A (Calcium) Powder — the calcium half of the program.
- Red Sea Reef Foundation C (Magnesium) Powder — keeps Ca & Alk in balance.
- Red Sea Reef Foundation Pro Multi Test Kit — test Ca, Alk & Mg to dose accurately.
FAQ
What does Foundation B do?It maintains carbonate alkalinity (KH), the buffer that stabilizes pH and provides the carbonate corals use to build their skeletons.
Powder vs. liquid—what’s the difference?The powder is a concentrated, more economical form. You dose it per the program or dissolve it into your own stock solution.
How much should I dose?It depends on your tank’s alkalinity uptake—test weekly and dose to demand. Never add more than 60 g at once.
Do I need all three (A, B, C)?For balanced coral growth, yes—calcium, alkalinity, and magnesium must be kept in proportion.
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