Alkalin 8.3 – FAQ

What is Alkalin 8.3?
Alkalin 8.3 is a liquid alkalinity (KH) supplement and pH buffer designed to increase and stabilize alkalinity in marine and reef aquariums.

What does Alkalin 8.3 do?
It raises alkalinity and helps stabilize pH by providing carbonate and bicarbonate ions, which are essential for maintaining a stable reef environment.

How does Alkalin 8.3 affect pH?
It gradually raises pH up to approximately 8.3. Once that level is reached, continued dosing increases alkalinity without significantly increasing pH further.

Why is alkalinity important in a reef aquarium?
Alkalinity (KH) represents the water’s buffering capacity and helps maintain stable pH. It is also a key component in coral skeletal growth.

What alkalinity level should I maintain?

• Target range: ~7–12 dKH
• Stability is more important than hitting an exact number

What makes Alkalin 8.3 different from other alkalinity supplements?

• Multi-component buffer (not just sodium carbonate)
• Automatically regulates pH toward ~8.3
• Provides a more stable system compared to single-component buffers
• Free of phosphate, silicate, and organics 

Is Alkalin 8.3 safe for fish, corals, and invertebrates?
Yes. When used as directed, it is safe for all marine aquarium inhabitants.

When should I use Alkalin 8.3?

• When alkalinity is below target range
• When pH is unstable or consistently low
• In reef systems with moderate to high demand
• When not using a full two-part system

How do I dose Alkalin 8.3?

• Shake well before use
• Typical starting dose: ~5 ml per 30 gallons daily
• Adjust dosing based on alkalinity test results 

How much will Alkalin 8.3 raise alkalinity?
Approximately 1 ml increases alkalinity by ~3.1 dKH per gallon (estimate; always test and adjust).

How often should I dose Alkalin 8.3?

• Daily dosing is preferred for stability
• Adjust frequency based on your aquarium’s consumption rate

Should I test alkalinity before dosing?
Yes. Always test alkalinity before adjusting dosing to avoid overcorrection.

Can I overdose Alkalin 8.3?
Yes. Excess alkalinity can cause instability, precipitation, and stress to corals. Dose carefully and monitor levels.

Can I use Alkalin 8.3 with other supplements?
Yes, but keep balance in mind:

• Use with calcium (Calcion or Reef Code A)
• Use with magnesium (Magnesion)

Avoid combining with other alkalinity products unless correcting a specific imbalance.

Can I use Alkalin 8.3 with Reef Code?
Generally, no. Reef Code B already provides alkalinity.
Alkalin 8.3 is best used as a standalone alkalinity supplement or for corrections.

What problems does Alkalin 8.3 help solve?

• Low alkalinity (KH)
• pH instability
• Poor coral growth due to buffering issues
• Inconsistent aquarium chemistry