pH+ FAQ

Created by Adam Clayton, Modified on Wed, 8 Apr at 10:22 AM by Adam Clayton

What is pH+?
pH+ is a liquid supplement designed to increase pH in marine, reef, and freshwater aquariums.


What does pH+ do?
It raises pH and can also contribute to alkalinity, helping improve overall water chemistry in aquariums.


When should I use pH+?

  • When pH is below the desired range
  • When alkalinity is also low or insufficient
  • When correcting general water chemistry issues

When should I NOT use pH+?

  • If alkalinity is already at proper levels and only pH needs adjustment
  • As a long-term solution without identifying the root cause of low pH
  • If pH fluctuations are minor and within normal range

What pH level should I maintain?

  • Typical reef range: ~8.1–8.4
  • Acceptable range: ~8.1–8.5
  • Stability is more important than exact numbers 

How do I dose pH+?

  • Shake well before use
  • Add to a high-flow area
  • Dose gradually and re-test pH after each adjustment

How quickly does pH+ work?
pH typically begins to increase shortly after dosing, but changes should be monitored and adjusted gradually.


How fast should I raise pH?

  • Do not increase pH more than ~0.2 per 24 hours
  • Gradual adjustments help avoid stress to aquarium inhabitants

Can I overdose pH+?
Yes. Overdosing can cause rapid pH and alkalinity increases, leading to instability and stress to livestock.


Does pH+ affect alkalinity?
Yes. Unlike Boost pH+, pH+ can increase alkalinity as part of its buffering effect.


Should I test before dosing?
Yes. Always test:

  • pH
  • Alkalinity

Both parameters should be understood before making adjustments.


Is pH+ a permanent solution for low pH?
No. It can be used as a temporary or corrective solution. Long-term low pH is often caused by excess CO₂, poor gas exchange, or other system issues that should be addressed.


Can I use pH+ with other supplements?
Yes, but balance is important:

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

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


What problems does pH+ help solve?

  • Low pH
  • Low alkalinity contributing to poor buffering
  • General water chemistry instability



Important distinctions:

  • pH+ → raises pH + alkalinity
  • Alkalin 8.3 → raises alkalinity + stabilizes pH (buffer system)
  • Boost pH+ → raises pH only (targeted use)

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