Aquarium Water Parameters Guide: Testing, Meaning & Stability
Understand aquarium pH, GH, KH, ammonia, nitrite, nitrate and temperature, with a table that keeps species-specific requirements in context.
Plan, understand and improve your aquarium.
Learn from practical lessons, make informed decisions with aquarium tools and insights, and share the aquarium you have created. Explore at your own pace.
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What do you want to do?
Understand your aquarium. Make informed changes.
Use intelligent insights, water history and care tools to make sense of changes in your aquarium. Manage it privately, or share selected details and photos with fellow aquarists.
Your free account — Up to 2 active or paused aquariums, with practical insights, water history and care tools. Public sharing is optional; advanced AI tools require PRO.
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Share a favorite aquarium photo or the story behind your setup. Discover what fellow aquarists are creating.
AquariumLesson in numbers
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- Aquarium Plants
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- Fish Species
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- Algae Profiles
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- Lessons
Practical guides for aquarium setup, care and troubleshooting.
Start with focused lessons before you change lighting, layout, planting or long-term care.
Aquarium Water Parameters Guide: Testing, Meaning & Stability
Understand aquarium pH, GH, KH, ammonia, nitrite, nitrate and temperature, with a table that keeps species-specific requirements in context.
Calculate lighting, dosing and aquarium volume
Use practical calculators before changing lighting, nutrients, substrate, volume or CO₂.
Open calculatorsAquarium inspiration from @AquariumLesson
Aquascapes, fish, plants and practical ideas from AquariumLesson.