Featured guideBetta fish
Aquarium care, made practical
Aquarium Fish Care: Stable Water, Healthy Animals
Clear guidance for choosing fish, keeping water stable, and solving common aquarium problems.
Featured guideBetta fish
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Water checks
Know what the numbers mean
- TemperatureHow warm the water is held. It sets how fast the animal burns energy and how much oxygen the water can carry.C
- pHHow acidic or alkaline the water is, on a scale where each whole step is a tenfold change.
- Carbonate hardness (KH)How much carbonate the water carries. This is what resists a pH swing, so KH is usually the reason pH moves or holds.dKH
- Ammonia (total)Nitrogen waste as the animals excrete it, before any bacteria have processed it.mg/L
Care that starts with the animal
Make safer aquarium decisions
- Start with the animalChoose around its adult needs, not the shop label.
- Support the whole systemConnect waste, oxygen, flow, and maintenance.
- Feed with purposeUse diet, competition, and waste to guide the routine.
- Find the causeCheck measurable causes before changing treatment.
