Why Is My Fish Tank Cloudy? Causes, Fixes & Timeline
New aquarium looking cloudy? Here's what's really happening, whether your fish are at risk, and the simple steps to clear it up in a few days.
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What size is your tank?
Pick your tank size and discover compatible species.
Easy
Platy Fish
Colorful livebearers that thrive in community setups.
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Easy
Corydoras Catfish
Peaceful bottom-dwellers that keep your substrate clean.
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Easy
Mystery Snail
Gentle algae grazers with beautiful spiral shells.
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Easy
Guppy
Hardy livebearers with endless color varieties.
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New to fishkeeping?
Start Here
01
Betta Fish Tank Setup
Step-by-step tank setup guide for beginners — size, filter, heater, and cycling.
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02Best Fish for a 10 Gallon
Top 10 beginner-friendly species for a small starter tank.
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03Master the Nitrogen Cycle
pH, ammonia, nitrites — what matters and how to get it right.
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04Water Test Kit Guide
How to test your tank water and what the numbers mean.
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Popular Species
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Recent guides, tips, and insights for aquarium hobbyists.
Do Fish Sleep? How Aquarium Fish Rest (And What You Can Do to Help)
Fish don't have eyelids and can't close their eyes, but they do sleep. Learn how aquarium fish rest, how to spot a sleeping fish, and how lighting affects their sleep cycle.
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Yellow Bass Care: Can You Keep One in a Tank or Pond?
Yellow bass are native, schooling freshwater fish that grow 9–12 inches and rarely thrive in home aquariums — here's what to know before keeping one.
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Meet our teamResearch-backed guides from experienced aquarists.
Honest product picks — affiliate links never influence our choices.
Clear language, no jargon — fish care made simple.