Petsmart Aquarium Kits Compared: Best Tanks, Sizes, and Value
We compare PetSmart aquarium kits by tank size, included gear, and price. See which 5-gallon, 10-gallon, and 15-gallon …
Your tank. Your fish. Your sanctuary.
Science-backed aquarium equipment reviews and fishkeeping guides — freshwater, saltwater, and everything in between.
Setting up and keeping an aquarium should be rewarding, not overwhelming. Whether you're cycling your first 10-gallon freshwater tank or fine-tuning a reef, AquariumLab gives you clear, science-backed guides for real fishkeepers.
104+ in-depth guides · 3 topic categories · Updated September 2026
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Popular Guides
Most Popular Pet Fish: 5 Freshwater Favorites Compared
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Brackish Water Fish: 5 Species Compared for Your Tank
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What Are the Most Peaceful Fish for a Community Tank?
Discover the most peaceful freshwater fish for your community tank. Compare tank size, temperature, pH, and adult size …
5 Smallest Aquarium Fish for Nano Freshwater Tanks
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Compare the best aquarium snails for freshwater tanks. Nerite, mystery, ramshorn, Malaysian trumpet, and assassin snails …
Automatic Fish Feeder Comparison: 5 Best Options for 2026
We tested and compared the best automatic fish feeders for freshwater tanks. See which feeder keeps your fish fed on …
Best Fish Tanks Compared: 5 Setups for Freshwater Aquariums
Compare five freshwater fish tanks: starter kits, rimless, acrylic, and large setups. Find the right size, material, and …
Best Freshwater Fish for a Home Aquarium: 12 Beginner-Friendly Species
Discover the 12 best freshwater fish for beginner home aquariums. Compare tank sizes, water parameters, temperament, and …
Freshwater vs Saltwater Aquarium: Which Is Right for You (2026)
Compare freshwater vs saltwater aquariums in 2026. See real costs, water parameters, maintenance, and stocking to pick …
How to Care for Peacock Cichlids: Tank, Diet, and Compatibility
Learn how to care for peacock cichlids with the right tank size, water parameters, diet, and compatible tank mates. …
How to Care for Frontosa Cichlids: Tank Size, Diet, Compatibility
Learn how to care for Frontosa cichlids with right tank size, hard alkaline water, diet, and compatible Tanganyikan tank …
How to Care for Swordtails: Tank Size, Diet, Compatibility
Learn swordtail care basics including tank size, water parameters, diet, tank mates, and breeding tips for healthy 2026 …
How to Care for Rainbow Fish: Tank Size, Diet, and Compatibility
Learn rainbow fish care for 2026 with tank size, water parameters, diet, and compatible tank mates. Expert tips for …
The Nitrogen Cycle Explained: How to Cycle a New Fish Tank
Learn how the aquarium nitrogen cycle works and how to cycle a new fish tank safely. A complete beginner guide with …
How to Care for Zebra Danios: Tank Size, Diet, and Compatibility (2026)
Learn how to care for zebra danios, including tank size, water parameters, diet, compatible tank mates, and disease …
How to Care for Yoyo Loaches: Tank Size, Diet, and Compatibility
Learn how to care for yoyo loaches with the right tank size, diet, water parameters, and compatible tank mates. Includes …
How to Care for Tomato Clownfish: Tank Size, Diet, and Compatibility
Learn tomato clownfish care for 2026. Get tank size, water parameters, diet, compatibility, and step by step setup …
How to Care for Tiger Barbs: Tank Size, Diet, and Compatibility
Learn how to care for tiger barbs with exact tank size, diet, water parameters, and compatible tank mates in this 2026 …
How to Keep Sterbai Corydoras: Tank Size, Diet, Compatibility
Learn how to care for Sterbai Corydoras in 2026. This guide covers tank size, diet, water parameters, and compatible …
How to Care for Snowflake Moray Eels: Tank, Diet, Compatibility
Learn how to care for snowflake moray eels. Get tank size, water parameters, feeding tips, and safe tank mates for a …
How to Care for Snowflake Clownfish: Tank, Diet, and Compatibility
Learn how to care for snowflake clownfish with proper tank size, diet, compatibility, water parameters, and breeding …
How to Care for a Six Line Wrasse: Tank, Diet, and Compatibility
Learn how to care for a six line wrasse, including tank size, diet, compatibility, water parameters, and disease …
How to Care for Silver Arowana: Tank Size, Diet, Compatibility
Learn how to care for silver arowana with expert tips on tank size, diet, compatibility, water parameters, and tank …
How to Keep Rummy Nose Tetras: Tank Size, Diet, and Compatibility
Learn how to care for rummy nose tetras with the right tank size, water parameters, diet, and compatible tank mates. A …
How to Care for Royal Gramma: Tank Size, Diet, Compatibility
Learn how to care for royal gramma, including tank size, water parameters, diet, tank mates, and compatibility for a …
How to Care for Rope Fish: Tank Size, Diet, and Compatibility (2026)
Learn how to care for rope fish, including minimum tank size, ideal water parameters, diet, tank mates, and escape-proof …
How to Care for Redtail Catfish: Tank Size, Diet, Compatibility (2026)
Learn how to care for redtail catfish, including adult tank size, diet, water parameters, and compatibility for a 2026 …
How to Care for Ram Cichlids: Tank Size, Diet, and Compatibility (2026)
Learn how to care for ram cichlids in 2026. Covers tank size, water parameters, diet, compatible tank mates, breeding, …
How to Care for Platy Fish: Tank Size, Diet, and Compatibility
Learn how to care for platy fish in 2026 with the right tank size, water parameters, diet, tank mates, breeding, and …
How to Care for Red-Bellied Piranhas: Tank Size, Diet, Compatibility
Learn how to keep red-bellied piranhas with the right tank size, water parameters, diet, and compatible tank mates. …
How to Care for Peacock Eels: Tank Size, Diet, and Compatibility
Learn how to care for peacock eels with the right tank size, diet, water parameters, and compatible tank mates for a …
How to Care for Pea Puffers: Tank Size, Diet, and Compatibility
Learn to care for pea puffers in 2026. This guide covers tank size, water parameters, feeding, snails, and compatible …
How to Care for Panda Corydoras: Tank Size, Diet, and Compatibility
Learn how to care for panda corydoras, including tank size, water parameters, diet, tank mates, and maintenance in this …
How to Care for Pajama Cardinalfish: Tank, Diet, and Mates
Pajama cardinalfish care guide covering tank size, water parameters, diet, and safe tank mates for a peaceful reef …
How to Care for Otocinclus Catfish: Tank Size, Diet, and Compatibility
Learn how to care for Otocinclus catfish, including tank size, diet, water parameters, and compatible tank mates for a …
How to Care for Oscar Fish: Tank Size, Diet, and Compatibility
Learn how to care for Oscar fish with proper tank size, diet, water parameters, and compatible tank mates. Expert tips …
How to Care for Mollies: Tank Size, Diet, and Compatibility (2026)
Learn how to care for mollies with the right tank size, water parameters, diet, and compatible tank mates. Includes 2026 …
How to Care for a Midas Blenny: Tank Size, Diet, and Compatibility
Learn how to care for a Midas Blenny with ideal tank size, diet, tank mates, and water parameters. Expert saltwater …
How to Care for Longnose Hawkfish: Tank Size, Diet, and Compatibility
Learn how to keep longnose hawkfish healthy. This guide covers tank size, diet, compatibility, water parameters, and …
How to Care for Kuhli Loaches: Tank Size, Diet, and Compatibility Guide
Learn how to care for kuhli loaches, including tank size, diet, water parameters, and compatible tank mates. A complete …
How to Care for a Jack Dempsey Cichlid: Tank, Diet, and Mates
Learn how to care for a Jack Dempsey cichlid with the right tank size, water parameters, diet, and safe tank mates for …
How to Treat Ich in an Aquarium (2026 Step-by-Step Guide)
Learn how to treat ich in aquarium fish. This 2026 step-by-step guide covers temperature, salt, medication, and …
How to Lower pH in an Aquarium: Safe Methods That Work
Learn safe ways to lower aquarium pH gradually with tested methods. Covers Indian almond leaves, driftwood, RO water, …
How to Cycle a Fish Tank: Complete Beginner's Guide
Learn how to cycle a fish tank safely with this beginner's guide. Use ammonia, test water daily, and build beneficial …
How to Care for Goldfish: Tank Size, Diet, and Compatibility
Learn how to care for goldfish the right way. We cover ideal goldfish tank size, water parameters, diet, and compatible …
How to Care for Flowerhorn Cichlids: Tank, Diet, and Compatibility
Learn how to care for flowerhorn cichlids, including tank size, water parameters, diet, filtration, and safe tankmates. …
How to Care for Flasher Wrasse: Tank Size, Diet, and Compatibility
Learn how to care for flasher wrasse including tank size, diet, water parameters, and compatible tank mates for a …
How to Care for Flame Angelfish: Tank, Diet, and Compatibility
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How to Care for Emperor Angelfish: Tank Size, Diet, and Compatibility
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How to Care for Coral Beauty Angelfish: Tank Size, Diet and Compatibility
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How to Care for Congo Tetras: Tank Size, Diet, Compatibility (2026)
Learn how to care for Congo tetras with the right tank size, diet, water parameters, and compatible tank mates. Updated …
How to Care for Ocellaris Clownfish: Tank, Diet, Compatibility (2026)
Learn how to care for Ocellaris clownfish with this 2026 guide covering tank size, water parameters, diet, …
How to Care for Black Phantom Tetras: Tank, Diet, and Tank Mates
Learn how to care for black phantom tetras, including tank setup, water parameters, diet, and compatible tank mates.
How to Care for a Bi-Color Blenny: Tank, Diet, and Compatibility
Learn to care for a bi-color blenny with proven tank setup, diet, compatibility, and health tips for a healthy saltwater …
Best Beginner Fish Tanks 2026: All-in-One Kits Reviewed
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How to Care for Corydoras Catfish: Tank, Diet, and Compatibility
Learn how to care for Corydoras catfish with proper tank size, diet, water parameters, and compatible tank mates in this …
How to Care for Apistogramma: Tank Size, Diet, and Compatibility
Learn how to care for Apistogramma cichlids with the right tank size, water parameters, diet, and compatible tank mates …
Aquarium & Fishkeeping Statistics 2026: 42 Key Facts & Data Trends
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How to Care for Yellow Tangs: Tank Size, Diet, and Compatibility
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How to Care for a Powder Blue Tang: Tank, Diet, Compatibility (2026)
Learn how to care for a powder blue tang with expert tank size, diet, compatibility, and disease prevention tips. Keep …
How to Care for Porcupine Pufferfish: Tank Size and Diet
Learn how to care for porcupine pufferfish: minimum 180-gallon tank, stable saltwater parameters, a hard-shelled diet, …
How to Care for Pearl Gouramis: Tank Size, Diet, and Compatibility (2026)
Learn how to care for pearl gouramis with the right tank size, diet, water conditions, and compatible tank mates in this …
How to Care for Neon Tetras: Tank Size, Diet, and Compatibility
Learn how to care for neon tetras, including ideal tank size, diet, water parameters, and compatible tank mates for a …
How to Care for Leopard Wrasse: Tank Size, Diet, and Compatibility
Learn how to care for leopard wrasse, including tank size, water parameters, diet, and compatible tank mates. A complete …
How to Care for a Lawnmower Blenny: Tank, Diet, Compatibility
Learn how to care for a lawnmower blenny with expert tips on tank size, diet, compatibility, and water parameters for a …
How to Care for Kupang Damselfish: Tank Size, Diet, and Compatibility
Learn how to care for Kupang damselfish, including tank size, diet, compatibility, and water parameters. A practical …
How to Care for Koi: Tank Size, Diet, and Compatibility (2026)
Learn how to care for koi in a large tank or indoor pond. Covers minimum tank size, water parameters, diet, and safe …
How Often to Change Aquarium Water: Complete Guide
Learn how often to change aquarium water based on tank size, fish load, and filtration. Includes weekly schedules, …
How to Care for Harlequin Rasboras: Tank, Diet, Compatibility
Learn how to care for Harlequin Rasboras: tank size, water parameters, diet, and compatible tank mates for a thriving …
How to Care for Guppies: Tank Size, Diet, and Compatibility (2026)
Learn how to care for guppies with proper tank size, water parameters, diet, and compatible tank mates. A complete guppy …
How to Care for Green Chromis: Tank Size, Diet, and Compatibility
Learn how to care for green chromis, including tank size, diet, water parameters, and compatible tank mates. A complete …
Goldfish Tank Size Guide: How Much Space Do Goldfish Actually Need?
Learn the real goldfish tank size requirements for fancies, commons, and comets. Avoid stunting and poor water quality …
How to Care for Firemouth Cichlids: Tank Size, Diet, and Compatibility
Learn how to care for firemouth cichlids, including tank size, water parameters, diet, and compatible tank mates for a …
How to Care for Firefish Goby: Tank Size, Diet, and Compatibility
Learn firefish goby care including ideal tank size, water parameters, diet, and compatible tank mates for a healthy …
How to Care for Dwarf Gourami: Tank Size, Diet, and Compatibility
Learn how to care for dwarf gourami including tank size, water parameters, diet, and compatible tank mates. Step-by-step …
How to Care for an Orchid Dottyback: Tank, Diet, Compatibility
Learn how to care for an orchid dottyback: ideal tank size, water parameters, diet, and safe tank mates for a healthy …
How to Care for Discus Fish: Tank, Diet, Compatibility
Learn how to care for discus fish, including tank size, water parameters, feeding, and compatible tank mates for a …
How to Care for Convict Cichlids: Tank Size, Diet, and Compatibility
Learn how to care for convict cichlids with the right tank size, diet, and compatible tank mates. Includes water …
How to Care for Common Plecos: Tank Size, Diet, and Compatibility
Learn how to care for common plecos, including minimum tank size, ideal diet, water parameters, and compatible tank …
How to Care for Clown Triggerfish: Tank Size, Diet, Compatibility
Learn clown triggerfish care: minimum tank size, feeding, compatibility, water parameters, and behavior to keep this …
How to Care for Cleaner Wrasse: Tank, Diet, Compatibility
Learn how to care for cleaner wrasse. Tank size, diet, compatibility, water parameters, and common mistakes for this …
How to Care for Cherry Barbs: Tank, Diet, Compatibility
Learn how to care for cherry barbs, including tank setup, ideal water parameters, diet, tank mates, and breeding tips …
How to Care for Cardinal Tetras: Tank Size, Diet, and Compatibility
Learn how to care for cardinal tetras with the right tank size, soft acidic water, feeding plan, and peaceful tankmates. …
How to Care for Bristlenose Plecos: Tank Size, Diet, Compatibility
Learn how to care for Bristlenose Plecos with proper tank size, diet, water parameters, and compatible tank mates. A …
How to Care for Bolivian Rams: Tank Size, Diet, and Compatibility
Learn how to care for Bolivian rams with expert tips on tank size, water parameters, diet, tank mates, and breeding for …
How to Care for a Blue Tang: Tank Size, Diet, and Compatibility
Learn how to care for a blue tang, including minimum tank size, ideal water parameters, reef-safe diet, and compatible …
Best Aquarium Plants for Beginners 2026: Top 5 Easy Picks
Best aquarium plants for beginners in 2026. Compare the top 5 easy picks with tank size, temperature, pH, and gear …
Best Aquarium Lighting 2026: Top LED Lights for Planted Tanks
We tested the best LED aquarium lights for planted tanks in 2026. Compare PAR, spread, price, and dimming for Fluval, …
Best Aquarium Heaters 2026: Top Picks for Every Tank Size
We tested and ranked the best aquarium heaters of 2026 for tanks from 5 to 220 gallons. Compare watts, safety, …
How to Care for Bangaii Cardinalfish: Tank Size, Diet, Compatibility
Learn how to care for Bangaii cardinalfish with proper tank size, diet, and compatibility tips. A clear saltwater guide …
How to Care for Lyretail Anthias: Tank Size, Diet, Compatibility
Learn how to care for Lyretail Anthias: tank size, diet, compatibility, water parameters, and harem setup for a healthy …
How to Care for African Dwarf Frogs: Tank Size, Diet, Compatibility
How to care for African dwarf frogs: tank size, diet, compatibility, water parameters, feeding schedule, and safe tank …
Best Fish for Beginners: 10 Easy Aquarium Species
Looking for the best fish for beginners? These 10 easy aquarium species are hardy, forgiving, and simple to feed. See …
Best Aquarium Filters 2026: Complete Buyer's Guide
We compared the best aquarium filters in 2026 by flow rate, media capacity, noise, and price. See top HOB, canister, …
How to Care for Betta Fish: Tank Size, Diet, and Compatibility
Learn how to care for betta fish with the right tank size, diet, and compatible tank mates. Get aquarium setup and …
How to Care for Angelfish: Tank Size, Diet, and Compatibility
Learn how to care for angelfish with the right tank size, water parameters, diet, and compatible tank mates. Includes …
How to Care for Silver Dollar Fish: Tank, Diet, Compatibility
Learn silver dollar fish care including tank size, diet, water parameters, compatibility, and setup tips in this …
How to Care for Mandarin Fish: Tank Size, Diet, and Compatibility (2026)
Learn how to care for mandarin fish with the right tank size, diet, and compatible tank mates. Expert saltwater guide …
How to Care for Flame Hawkfish: Tank Size, Diet, and Compatibility
Learn how to care for flame hawkfish with our 2026 guide covering tank size, diet, water parameters, compatibility, and …
How to Care for Green Spotted Puffer Fish (2026 Guide)
Learn green spotted puffer care: brackish tank setup, 30-gallon minimum, 78-82°F water, shellfish diet, and safe tank …
How to Care for Electric Yellow Cichlids: Tank, Diet, Compatibility
Learn how to care for electric yellow cichlids, including tank size, diet, water parameters, tank mates, and …
How to Care for Clown Loaches: Tank Size, Diet, and Compatibility (2026)
Learn how to care for clown loaches with proper tank size, diet, water parameters, and compatible tank mates. Updated …
What Is the Aquarium Nitrogen Cycle? A Beginner's Guide
Learn how the aquarium nitrogen cycle works, why it matters, and how to cycle a new fish tank safely for healthy fish …
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Petsmart Aquarium Kits Compared: Best Tanks, Sizes, and Value
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