Live Tool
Aquarium Stocking Calculator
Compare selected freshwater fish across temperature, pH, GH/water hardness, social/group needs, known behavior risks, and minimum tank size.
- Temperature
- pH
- GH
- Social Groups
- Behavior
- Tank Size
Freshwater Aquarium Tools
AquaScience is a practical set of freshwater aquarium planning tools. Start with the Aquarium Stocking Calculator to compare fish compatibility, water conditions, social/group needs, and tank-size suitability.
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Free Aquarium Tools
Practical calculators for freshwater aquarium planning, stocking, and equipment setup.
Coming Soon
Aquarium Volume Calculator
Calculate aquarium water volume accounting for substrate and hardscape displacement.
Coming Soon
Aquarium Heater Calculator
Determine suitable heater wattage based on tank and room temperature.
Coming Soon
Filter Flow Calculator
Estimate appropriate aquarium filter turnover.
What Each Tool Does
Aquarium Stocking Calculator
Checks temperature, pH, GH, social/group needs, known behavior risks, and minimum tank size for your selected fish.
Aquarium Volume Calculator
Will estimate true water volume after substrate and hardscape are added.
Aquarium Heater Calculator
Will help estimate suitable heater wattage from tank and room temperature.
Filter Flow Calculator
Will estimate filter turnover based on tank volume and setup needs.
How AquaScience Works
Choose a Tool
Choose the tool that matches your current aquarium planning task.
Enter Your Aquarium Details
Enter tank details and species choices to run focused compatibility checks.
Review the Results
Review each check together before making stocking or setup decisions.
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Explore Freshwater Fish
Popular freshwater species often compared in home aquarium plans.
Betta
Betta splendens
Neon Tetra
Paracheirodon innesi
Guppy
Poecilia reticulata
Peppered Corydoras
Hoplisoma paleatum
Freshwater Aquarium Guides
Topic previews for freshwater aquarium planning and fish care.
Understanding Aquarium pH
Guide preview only. Full page content for this topic is planned in a future phase.
General Hardness (GH) Explained
Guide preview only. Full page content for this topic is planned in a future phase.
Fish Compatibility Basics
Guide preview only. Full page content for this topic is planned in a future phase.
Schooling Fish Requirements
Guide preview only. Full page content for this topic is planned in a future phase.
Choosing the Right Heater
Guide preview only. Full page content for this topic is planned in a future phase.
Filter Flow Rates
Guide preview only. Full page content for this topic is planned in a future phase.
Recommended Aquarium Gear
Equipment planning categories. Detailed recommendations are coming in a future phase.
Test Kits
Heaters
Filters
Thermometers
Plants
Lighting
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Freshwater Aquarium FAQ
How many fish can I put in my aquarium?
There is no single fish-per-gallon rule. Tank size, fish adult size, swimming behavior, and filtration all matter together.
Do I need a heater for my freshwater tank?
Many tropical freshwater fish need stable warm water. Check your fish temperature range before choosing heating equipment.
How often should I change my aquarium water?
Many aquariums do well with regular partial water changes. Test your water and adjust your schedule to match your stocking and filter load.
What is the nitrogen cycle?
The nitrogen cycle is the bacterial process that converts toxic fish waste into less harmful compounds. New tanks need time to establish it.
Why is my aquarium water cloudy?
Cloudiness can come from bacterial blooms, disturbed substrate, algae, or overfeeding. Water testing and maintenance checks help identify the cause.
Can I mix different types of fish?
Some combinations can work when water conditions, social needs, and behavior overlap, but that is planning guidance rather than a guarantee. Always compare fish requirements and review all checks before mixing them.
How big should I make the aquarium filter?
Filter size should match tank volume and fish load. Use a turnover estimate as a starting point, then adjust for species needs.
Do I need real plants?
Real plants are optional, but they can help with shelter and water stability. You can start simple and add plants over time.
What do I do if my fish is sick?
Test water quality first and address any issues quickly. For diagnosis and treatment decisions, consult a qualified aquatic professional.
How do I clean my aquarium filter?
Rinse filter media gently in removed tank water, not untreated tap water. This helps protect beneficial bacteria.
Clear Data. Clear Reasoning.
Practical tool-first guidance
AquaScience focuses on clear freshwater planning checks you can use right away.
Separate compatibility checks
Water compatibility and behavioral compatibility are shown separately on purpose.
Visible check categories
Temperature, pH, GH, social/group, behavior, and tank size are each reported clearly.
Planning guidance, not guarantees
Results help with planning and should be combined with species-level research.