Design your aquatic system
with confidence.
Free calculators that go beyond rules of thumb. Size your pump with real friction losses, check ammonia toxicity at your actual pH and temperature, and find the right parameters for your species — all in one place.
Explore the ToolsSystem Design Calculator
Size your pump, biofilter, and grow beds based on your fish species, tank volume, and plumbing layout. Accounts for pipe friction losses and fitting equivalent lengths.
Open tool →Water Quality Reference
Species-specific parameter ranges for tilapia, trout, shrimp, koi, barramundi, and catfish. Visual guides with clear safe, caution, and danger thresholds.
Open tool →Ammonia Toxicity Calculator
Convert your test kit TAN reading to actual toxic NH₃ based on pH and temperature. See toxicity risk across all species instantly.
Open tool →Better tools, better systems.
Precise, not approximate
Our pump calculator accounts for pipe diameter, fitting count, and vertical rise — so you get the right pump the first time instead of guessing and replacing.
Built for your species
Tilapia and trout have completely different ammonia tolerances. Our tools adjust for species, pH, temperature, and stocking density simultaneously.
Free tools to get you started.
No signup. No credit card. Our core design tools are free — because sizing your first pump shouldn't require a subscription. Need more? Advanced features and consulting are coming soon.
New tools and guides, straight to your inbox.
We're building engineering resources for aquaponics and aquaculture. Get notified when new calculators and design guides drop — no spam, just useful stuff.
No spam, ever. Unsubscribe anytime.
Building a system? Start here.
The System Design Calculator sizes your pump, biofilter, and grow beds based on your fish species, tank volume, and plumbing configuration.
Open System Designer →