About Tank Math

Tank Math is a small, independent collection of aquarium calculators. The goal is simple: give fishkeepers correct numbers and show the working, so results can be checked and trusted.

Principles

• Exact unit constants from NIST SP 811; water density from USGS.
• Where hobby guidance is a rule of thumb, we name the source and show alternatives.
• No fish-health or medication advice. For sick fish, consult an aquatic veterinarian.

Not affiliated with any manufacturer or retailer.