ReefBay Tools
Practical reef calculators for water changes, salinity, volume, flow, lighting, quarantine, and planning.
🐠
Tank Stocking Calculator
Estimate fish load and bioload safety margins.
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💡
Coral Lighting Calculator
PAR placement and coral lighting zones.
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🧂
Salt Mix Calculator
Raise/lower salinity with practical dosing.
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Water Change Calculator
NO3/PO4 projections and target planning.
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📦
Tank Volume Calculator
Gross/net water volume with displacement.
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ATO Top-Off Calculator
Evaporation and reservoir sizing.
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🩺
Quarantine Planner
Checkpoint timeline for fish/coral QT.
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Startup Budget Calculator
Estimate setup cost by system tier.
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🌊
Flow Turnover Calculator
Flow targets by coral profile.
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Real reef tank data
What size tanks reefers run, the most popular fish and corals, and the water parameters real tanks actually hold. Computed weekly from thousands of ReefBay tank profiles.
Browse reef tank statistics →
