Aquarium Filter Planner

Aquarium Filter Planner: Find the Right Filter Flow for Your Fish Tank

Estimate the recommended aquarium filter flow rate from tank volume, fish species, fish count, and feeding type — then explore example filters that match the target L/h or GPH range.

Estimate fish loadUse fish size, count, activity level, and feeding type to estimate a practical bioload level.
Calculate turnoverConvert the estimated tank load into a recommended water turnover rate per hour.
Show example filtersHighlight example aquarium filters with suitable flow ratings and setup styles.

What This Aquarium Filter Planner Does

This tool helps you decide what filter flow range to look for before comparing aquarium filters.

Estimate fish load

Use fish size, count, activity level, and feeding type to estimate a practical bioload level.

Calculate turnover

Convert the estimated tank load into a recommended water turnover rate per hour.

Recommend filter flow

Generate a minimum, ideal, and better filter-flow range in L/h and GPH.

Show example filters

Highlight example aquarium filters with suitable flow ratings and setup styles.

Build Your Aquarium Filter Plan

Enter your tank volume and planned fish. The planner estimates a target filter flow first, then shows a few example products that fit the setup.

How to Use Your Aquarium Filter Plan

When filter flow matters most

Prioritize flow fit when your tank is heavily stocked, contains messy fish, or needs stronger circulation.

When media capacity matters

For goldfish, cichlids, turtles, or large fish, biological media capacity can be as important as the flow rating.

When gentle flow matters

For bettas, shrimp, fry, or small slow-swimming fish, choose adjustable flow or sponge filtration to avoid excessive current.