Aquatics & Fishkeeping Tools
Aquarium volume calculators, CO2 drop checker charts, heater wattage sizing, stocking compatibility guides, and water parameter trackers for aquarists.
All 10 Aquatics & Fishkeeping Calculators & Utilities
Filter the 10 tools below, sort them, expand a row for the full description, or keep one in your toolbox with the ＋. Press / to jump to the filter.
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🫧 Aquarium CO₂ Calculator
Dial in high-tech planted tank CO₂ injection. Calculate dissolved CO₂ concentration (ppm) from pH/KH equilibrium, simulate 4 dKH drop checker reagent colors, and estimate cylinder gas lifespan.
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🍤 Fish Feeding & Vacation Planner
Generate weekly nutrition schedules with gut-clearing fast days. Calculate safe vacation fasting limits, prevent the catastrophic "neighbor overfeeding" disaster, and generate foolproof pet-sitter ...
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🌡️ Aquarium Heater & Chiller
Calculate precision heating wattage, evaporative surface loss, and cooling chiller ratings. Eliminates the catastrophic "stuck heater" disaster using fail-safe dual heater redundancy math.
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💡 Aquarium PAR Lighting
Calculate photosynthetically active radiation (PAR) penetration at substrate depth, daily light integral (DLI), and generate split photoperiod schedules to suppress nuisance algae.
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💊 Fish Medication Dosing
Identify fish ailments by symptom and calculate precision medication dosages based on true net water volume. Includes invertebrate toxicity warnings and scaleless fish safety flags.
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🔄 Nitrogen Cycle Tracker
Master the nitrogen cycle without harming livestock. Calculate exact pure ammonia dosing, simulate bacterial colonisation curves (Nitrosomonas & Nitrospira), and validate your 24-hour clearance test.
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🐠 Fish Stocking Compatibility
Build your community aquarium roster. Calculates true metabolic bioload, swimming strata distribution (top, mid, bottom), temperature and pH overlap, and flags aggression and schooling warnings.
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🪨 Aquarium Substrate Estimator
Plan your planted tank and hardscape layout. Calculate exact substrate volume, sloped perspective depth, commercial bag counts (3L/9L aqua soil, 20lb/50lb sand), and stone weight for Iwagumi and Ry...
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🌊 Aquarium Volume & Weight
Calculate gross and true net water volume, accounting for glass thickness, top water margin, substrate, and hardscape displacement. Computes total filled weight and structural floor joist loading.
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🧪 Water Change & Salinity
Precision aquatic water chemistry toolkit. Calculate exact nitrate dilution percentages, RO/DI remineralization buffers for dwarf shrimp and plants, and marine saltwater salt batch mixing.
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