Why Maintaining Healthy pH Levels in Shellfish Systems Matters
At Todd Fish Tech, we understand that every detail counts when it comes to keeping live shellfish healthy and stress-free. One of the most critical – yet often overlooked – aspects of maintaining your Lobster Pod or shellfish recirculation system is managing the pH of the seawater.
In natural seawater, the pH sits comfortably between 8.0 and 8.2.
In a closed filtration system, however, this balance is easily disrupted. The good bacteria in the biological filter—while essential for breaking down waste—gradually lower the system’s pH over time. If the pH falls too far, it becomes increasingly acidic, which has a direct impact on shellfish health, blood chemistry, and survivability.
Why does this matter?
Because crabs and lobsters rely on optimal pH to eliminate carbon dioxide from their bodies. If pH dips below 7.6, stress levels increase, immunity weakens, and survival rates drop—especially during transport to customers.
Monitoring and Maintenance
We recommend testing the pH once or twice per week using multi-parameter test strips. If your system drops below 8.0, it’s time to intervene. The simplest and safest way to correct this is by adding bicarbonate of soda (sodium bicarbonate)—either supplied by us or sourced from a trusted catering supplier. Avoid using baking soda as it contains additives.
For a 300kg Lobster Pod, we recommend adding around one mugful of bicarbonate directly into the filter. It dissolves quickly and helps restore the correct pH balance within minutes.
Remember:
- A falling pH reduces filter efficiency.
- A low pH stresses your shellfish.
- Routine monitoring helps prevent costly problems.
If you’re unsure or need supplies or support, our team is happy to help.
👉 Visit www.toddfishtech.com
📩 Email: hello@toddfishtech.com
📞 Call us today for advice or support with your system.
