Inputs
Presets tune gallons-per-inch, footprint & depth targets, and temp.
×
20% extra capacity for growth, décor displacement, and pump down‑rating.
Species preset will adjust this when you change species.
Results & Checks
Recommended Volume
—
—
Footprint Min
—
L × W
Depth Min
—
waterline
Flow Rate
—
GPH / LPH
Heater
—
estimated W
Total Weight
—
kg / lb
Floor Load
—
PSF approximation
Monthly Cost
—
heater + filter + lights
Evaporation
—
top‑off / day
Growth → Required Volume
Operating Cost Breakdown (Monthly)
Floor Load (PSF) vs Typical Limit
Details
Scenario Manager
Scenarios are stored locally in your browser. You can also export/import JSON.
How the Math Works
Sizing heuristics & formulas
- Gallons = (adult SCL in inches) × (gal/in preset) × (# turtles) × (1 + safety%).
- Footprint: length ≥ kL×SCL, width ≥ kW×SCL (species‑tuned).
- Depth: swimmers 1.5–2× SCL; musk/mud 1–1.5× SCL with perches.
- Flow: 5–8× tank volume per hour, adjusted for head loss.
- Heater: ~3–5 W/gal for Δ10°F (5.6°C), scaled by temperature delta.
- Weight ≈ liters × 1 kg (+ glass/stand/decor), PSF = total weight / stand area (ft²).
- Evaporation (simple): proportional to surface area × (1 − RH).
Disclaimers & safety
- Rules are hobby heuristics; species behavior varies.
- Floor loading is approximate—consult a structural professional for heavy setups.
- For juveniles or weak swimmers, provide rest ledges and shallower zones.