Quick answer: Planaria are small free-living flatworms, usually 2 to 15 mm long, with a triangle-shaped head and two dark eyespots that make them look cross-eyed. They glide smoothly over the glass and substrate, and they’re white, gray or brown. In a fish-only tank they’re mostly a harmless nuisance, but … Read more about Planaria in Aquarium: How to Identify, Remove and Prevent Them
Quick answer: Cloudy fish tank water is usually caused by one of five things, and the color tells you which. White or milky water in a new tank is a bacterial bloom, which clears by itself in a few days to about two weeks. Gray water right after setup is … Read more about Cloudy Fish Tank Water: Causes by Color and How to Clear It
Quick answer: A 150 gallon fish tank is a proper show aquarium, big enough for large fish, huge schools, or a stunning planted display, and stable enough to be forgiving once it is running. Two things people underestimate. First, “150 gallon” is not one shape. Common ones range from a … Read more about 150 Gallon Fish Tank: Dimensions, Weight, Setup, and Stocking Ideas
Quick answer: Most aquarium snail eggs fall into three looks. A clear jelly blob stuck underwater on glass or a leaf is from a pest snail like a bladder, pond or ramshorn snail, and it hatches in one to three weeks. Tiny hard white dots like sesame seeds are nerite … Read more about Aquarium Snail Eggs: What They Look Like in a Fish Tank and What to Do
Quick answer: White fuzz on aquarium plants or new driftwood is almost always a harmless biofilm or water mold. Bacteria and fungi feed on sugars leaching out of fresh wood and on decaying bits of plant, and it looks like soft white cotton or slimy cobwebs. It won’t hurt your … Read more about White Fuzz on Aquarium Plants and Driftwood: What It Is and How to Get Rid of It
Detritus worms are tiny, thin, white to tan segmented worms that live in your substrate and eat leftover food and waste. They’re harmless to fish, shrimp, snails, plants and people, and a small number in the gravel is a normal sign of a living tank. You only notice them when … Read more about Detritus Worms in Aquarium: Are They Harmful and How to Get Rid of Them