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The Complete Aquarism Glossary

Decode the jargon. Everything you need to know about fish keeping, from "Ammonia Spikes" to "Zebra Danios".

All Terms Anatomy Aquarium Problems
Equipment & Hardware
Filtration & Water Flow Physiology Tank Setup Water Parameters

A

Air Pump
Equipment & Hardware
An air pump supplies air to the aquarium, increasing oxygen exchange and powering devices like sponge filters and air stones.
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H

Heater
Equipment & Hardware
An aquarium heater maintains stable water temperature, ensuring tropical fish remain within their safe and healthy thermal range.
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L

LED Lighting
Equipment & Hardware
LED lighting provides efficient, adjustable illumination for aquariums, supporting fish visibility, plant growth, and natural day–night cycles.
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P

Powerhead
Equipment & Hardware
A powerhead is a submersible pump that increases water movement, circulation, and oxygen distribution in aquariums.
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T

Thermostat
Equipment & Hardware
A thermostat regulates aquarium heaters by turning them on or off to keep water temperature stable and safe.
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U

UV Sterilizer
Equipment & Hardware
A UV sterilizer uses ultraviolet light to reduce free-floating algae, bacteria, and parasites in aquarium water.
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