Care guides for freshwater, pond, and reef keepers, built around the numbers that keep fish alive: water chemistry, stocking, and the gear that holds it all steady.
Target ranges, freshwater community tank
Typical ranges, not a reading from your aquarium.
Size up your own tank
Siamese fighting fish require a heated, gently filtered aquarium of at least 5 gallons, stable water parameters, and an insect-rich carnivore diet. This guide covers practical tank setup, daily feeding routines, tank mate compatibility, and disease prevention.
Discus require warm, soft, and stable water chemistry to thrive, with temperatures between 82-86°F, a pH of 6.0-6.8, and low mineral hardness. Maintaining disciplined water changes and consistent reverse osmosis blending protects their delicate immune systems and supports natural breeding behavior.
Breeding freshwater dwarf shrimp requires dialed-in water chemistry and stable mineral levels. Learn the exact pH, GH, KH, TDS, and temperature targets for Neocaridina, Caridina, and Sulawesi colonies.
Selecting cold water fish for tank or pond setups allows you to stock unheated outdoor water features and cool indoor aquariums without artificial heating. From active schooling minnows to bottom-dwelling tench, here are nine hardy species and their winter care needs.
Maintaining ideal betta fish water parameters requires steady warmth between 75-80°F, neutral pH, and clean water free of ammonia and nitrite. Consistent maintenance and regular testing keep these tropical fish active and disease-free.
Culturing daphnia at home provides a continuous supply of nutritious live food for aquarium fry and adult fish. Learn how to set up containers, feed yeast or green water, and harvest reliably without crashing your colony.
A practical zebra nerite snail care guide detailing water hardness targets, calcium shell health, diatom grazing, and tank escape prevention. Learn why these algae scrapers never overpopulate freshwater.
Learn how to maintain zebra loaches with practical guidance on schooling numbers, soft sand substrates, pest snail management, and peaceful tank mates.
Zebra danios are fast-swimming subtropical fish that require long tanks, tight lids, and cool water. Success with Danio rerio depends on keeping a tight school of six or more to diffuse energy and prevent nipping.
Zebra danios and neon tetras can coexist peacefully in the same aquarium when provided with adequate swimming space and compatible water conditions. Maintaining a school of at least six of each species and keeping water temperatures near 72-75°F prevents stress and fin nipping.
Otocinclus catfish readily eat blanched zucchini once it is softened enough for their specialized rasping mouths. Preparing and anchoring fresh slices gives these small aufwuchs grazers vital nutrition when natural aquarium algae runs low.
Plecos are naturally nocturnal bottom-dwellers that spend daylight hours tucked away, but constant hiding paired with lethargy points to poor water parameters, intense lighting, or tank mate aggression. Setting up appropriate driftwood caves and evening feedings helps timid catfish settle in comfortably.
Photo by Peter O'Connor aka anemoneprojectors on Openverse (CC BY-SA 2.0)
