Can you put a real pumpkin in a freshwater tank?
Discover why whole pumpkins damage aquarium water and how to safely offer small pieces as seasonal treats.
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Snail Eggs in the Aquarium: What the Clusters Are and What to Do
Tell snail eggs apart by species (nerite dots, mystery snail clutches, ramshorn and bladder jelly) and decide whether to scrape, keep, or hatch them.
Dwarf Crayfish (CPO) Care: The Small Crayfish That Leaves Fish Alone
CPO dwarf crayfish care: size, temperature, safe tank mates, molting, breeding, how much flow they like, and the states where you can't buy them.
Kuhli Loach Care in a River Tank
Kuhli loaches can live in a river tank if you give them a calm zone, soft sand, a group of six, 74–79°F water and plenty of places to hide.
Rosy Barbs: A Hardy River Tank Fish That Doesn't Need a Heater
Rosy barb care for unheated river tanks: temperature range, tank size, group size, tank mates, feeding and the fin-nipping problem.
Fall Leaves in the Aquarium: Indian Almond, Oak, and What's Safe
Which leaves are safe in a fish tank, how many to use, how to collect and prep oak leaves, and which trees to skip.
Feeding Fish While You're Away for the Holidays
Going away for Thanksgiving? Most healthy adult fish are fine for a long weekend without food. How to prep the tank before you leave, when an automatic feeder makes sense, why to…
Fiddler Crabs Need Brackish Water, and Why Most "Freshwater Crab" Setups Fail Them
Fiddler crabs are often sold as freshwater pets, but they slowly die in fresh water. What they really need: brackish water, a big land area, marine salt and a hydrometer. Plus the…
Ramshorn Snails: Pest or Helper?
Ramshorn snails show up uninvited on new plants, then multiply. Why that's usually a sign of overfeeding, what they actually do for your tank, and how to keep the population in check…
Musk Turtles in a Riparium: Size, Setup, and the 4-Inch Sales Rule
Musk turtles stay small, walk the bottom instead of swimming, and can live for decades. What they need in a riparium, what they'll eat, the federal 4-inch rule, and the salmonella precautions.
Aquarium Lights in Fall: How Many Hours, and What Riparium Plants Above the Water Need
Shorter days change the light coming through your windows. How many hours to run your aquarium lights, why a timer beats your memory, and how to light the plants growing above the…
Powerhead vs. Wavemaker: Which Makes Better River Flow?
Powerheads push a narrow, steady jet. Wavemakers make wide, variable flow. Which one builds a better river current, how much flow you need, and how to place it so fish can still…