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Aquarium Source
Aquarium Source
  • Forum
  • Info & Tips
    • → Setup & Maintenance
    • Why Your Betta Fish Is Laying At The Bottom Of The Tank
    • Why Is My Goldfish Turning Black?
    • Why Your Betta Fish Isn’t Eating
    • Why Is My Goldfish Turning White? All Possible Causes
    • Dropsy In Fish: Your Guide To Symptoms & Treatment
    • More Info & Tips →
  • Care Guides
    • → Resources (fish groups)
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    • Freshwater Fish
    • Saltwater Fish
    • Brackish Fish
    • Shrimp
    • Coral
    • Plants
    • More Care Guides →
  • Product Reviews
    • Best Rimless Aquarium Tanks
    • Top Nano Protein Skimmers
    • The Best Aquarium Heaters
    • Fluval FX4 Canister Filter Review
    • Our Favorite BioPellet Reactors
    • The Best Nano Protein Skimmers
    • Fluval FX6 Canister Filter Review
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Browsing Tag

freshwater aquarium

3 posts

Home - freshwater aquarium

SSetup & Maintenance
three different 40-gallon freshwater aquarium concepts displayed side by side, left aquarium containing a cardinal tetra community with Corydoras, center aquarium featuring a planted aquascape with ember tetras, right aquarium built around a pair of German blue rams with sand and driftwood
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  • 7 minute read

3 Ways to Stock a 40-Gallon Aquarium

  • byAquarium Source Editorial Staff
  • September 4, 2026
A 40-gallon breeder gives you enough room to build several genuinely different freshwater aquariums. It can become a…
SSetup & Maintenance
Undergravel filter plate beside modern aquarium filters on a home fishkeeping workbench
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  • 7 minute read

Are Undergravel Filters Actually Underrated?

  • byMillie Sheppard
  • August 22, 2026
Undergravel filters are not obsolete, but they are far more specialized than modern sponge, hang-on-back, and canister filters.…
SSetup & Maintenance
A 10-gallon rimless tank with a red betta fish next to a 20-gallon long planted community aquarium on a wooden dresser
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  • 6 minute read

10-Gallon vs. 20-Gallon: Which Is Better?

  • byAlison Yang
  • August 16, 2026
For most beginners choosing between a 10-gallon and 20-gallon aquarium, the 20-gallon is the better first tank. It…
Aquarium Source
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